ppapi/proxy/ppb_instance_proxy.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ppapi/proxy/ppb_instance_proxy.h"
   6
   7 #include "base/memory/ref_counted.h"
   8 #include "base/numerics/safe_conversions.h"
   9 #include "base/stl_util.h"
  10 #include "build/build_config.h"
  11 #include "media/base/limits.h"
  12 #include "ppapi/c/pp_errors.h"
  13 #include "ppapi/c/pp_time.h"
  14 #include "ppapi/c/pp_var.h"
  15 #include "ppapi/c/ppb_audio_config.h"
  16 #include "ppapi/c/ppb_instance.h"
  17 #include "ppapi/c/ppb_messaging.h"
  18 #include "ppapi/c/ppb_mouse_lock.h"
  19 #include "ppapi/c/private/pp_content_decryptor.h"
  20 #include "ppapi/proxy/broker_resource.h"
  21 #include "ppapi/proxy/browser_font_singleton_resource.h"
  22 #include "ppapi/proxy/content_decryptor_private_serializer.h"
  23 #include "ppapi/proxy/enter_proxy.h"
  24 #include "ppapi/proxy/flash_clipboard_resource.h"
  25 #include "ppapi/proxy/flash_file_resource.h"
  26 #include "ppapi/proxy/flash_fullscreen_resource.h"
  27 #include "ppapi/proxy/flash_resource.h"
  28 #include "ppapi/proxy/gamepad_resource.h"
  29 #include "ppapi/proxy/host_dispatcher.h"
  30 #include "ppapi/proxy/isolated_file_system_private_resource.h"
  31 #include "ppapi/proxy/message_handler.h"
  32 #include "ppapi/proxy/network_proxy_resource.h"
  33 #include "ppapi/proxy/pdf_resource.h"
  34 #include "ppapi/proxy/plugin_dispatcher.h"
  35 #include "ppapi/proxy/ppapi_messages.h"
  36 #include "ppapi/proxy/serialized_var.h"
  37 #include "ppapi/proxy/truetype_font_singleton_resource.h"
  38 #include "ppapi/proxy/uma_private_resource.h"
  39 #include "ppapi/shared_impl/array_var.h"
  40 #include "ppapi/shared_impl/ppapi_globals.h"
  41 #include "ppapi/shared_impl/ppb_url_util_shared.h"
  42 #include "ppapi/shared_impl/ppb_view_shared.h"
  43 #include "ppapi/shared_impl/scoped_pp_var.h"
  44 #include "ppapi/shared_impl/var.h"
  45 #include "ppapi/thunk/enter.h"
  46 #include "ppapi/thunk/ppb_compositor_api.h"
  47 #include "ppapi/thunk/ppb_graphics_2d_api.h"
  48 #include "ppapi/thunk/ppb_graphics_3d_api.h"
  49 #include "ppapi/thunk/thunk.h"
  50
  51 // Windows headers interfere with this file.
  52 #ifdef PostMessage
  53 #undef PostMessage
  54 #endif
  55
  56 using ppapi::thunk::EnterInstanceNoLock;
  57 using ppapi::thunk::EnterResourceNoLock;
  58 using ppapi::thunk::PPB_Compositor_API;
  59 using ppapi::thunk::PPB_Graphics2D_API;
  60 using ppapi::thunk::PPB_Graphics3D_API;
  61 using ppapi::thunk::PPB_Instance_API;
  62
  63 namespace ppapi {
  64 namespace proxy {
  65
  66 namespace {
  67
  68 #if !defined(OS_NACL)
  69 const char kSerializationError[] = "Failed to convert a PostMessage "
  70     "argument from a PP_Var to a Javascript value. It may have cycles or be of "
  71     "an unsupported type.";
  72 #endif
  73
  74 void RequestSurroundingText(PP_Instance instance) {
  75   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
  76   if (!dispatcher)
  77     return;  // Instance has gone away while message was pending.
  78
  79   InstanceData* data = dispatcher->GetInstanceData(instance);
  80   DCHECK(data);  // Should have it, since we still have a dispatcher.
  81   data->is_request_surrounding_text_pending = false;
  82   if (!data->should_do_request_surrounding_text)
  83     return;
  84
  85   // Just fake out a RequestSurroundingText message to the proxy for the PPP
  86   // interface.
  87   InterfaceProxy* proxy = dispatcher->GetInterfaceProxy(API_ID_PPP_TEXT_INPUT);
  88   if (!proxy)
  89     return;
  90   proxy->OnMessageReceived(PpapiMsg_PPPTextInput_RequestSurroundingText(
  91       API_ID_PPP_TEXT_INPUT, instance,
  92       PPB_Instance_Shared::kExtraCharsForTextInput));
  93 }
  94
  95 }  // namespace
  96
  97 PPB_Instance_Proxy::PPB_Instance_Proxy(Dispatcher* dispatcher)
  98     : InterfaceProxy(dispatcher),
  99       callback_factory_(this) {
 100 }
 101
 102 PPB_Instance_Proxy::~PPB_Instance_Proxy() {
 103 }
 104
 105 bool PPB_Instance_Proxy::OnMessageReceived(const IPC::Message& msg) {
 106   // Prevent the dispatcher from going away during a call to ExecuteScript.
 107   // This must happen OUTSIDE of ExecuteScript since the SerializedVars use
 108   // the dispatcher upon return of the function (converting the
 109   // SerializedVarReturnValue/OutParam to a SerializedVar in the destructor).
 110 #if !defined(OS_NACL)
 111   ScopedModuleReference death_grip(dispatcher());
 112 #endif
 113
 114   bool handled = true;
 115   IPC_BEGIN_MESSAGE_MAP(PPB_Instance_Proxy, msg)
 116 #if !defined(OS_NACL)
 117     // Plugin -> Host messages.
 118     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetWindowObject,
 119                         OnHostMsgGetWindowObject)
 120     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetOwnerElementObject,
 121                         OnHostMsgGetOwnerElementObject)
 122     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_BindGraphics,
 123                         OnHostMsgBindGraphics)
 124     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_IsFullFrame,
 125                         OnHostMsgIsFullFrame)
 126     IPC_MESSAGE_HANDLER(
 127         PpapiHostMsg_PPBInstance_GetAudioHardwareOutputSampleRate,
 128         OnHostMsgGetAudioHardwareOutputSampleRate)
 129     IPC_MESSAGE_HANDLER(
 130         PpapiHostMsg_PPBInstance_GetAudioHardwareOutputBufferSize,
 131         OnHostMsgGetAudioHardwareOutputBufferSize)
 132     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_ExecuteScript,
 133                         OnHostMsgExecuteScript)
 134     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetDefaultCharSet,
 135                         OnHostMsgGetDefaultCharSet)
 136     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SetPluginToHandleFindRequests,
 137                         OnHostMsgSetPluginToHandleFindRequests);
 138     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_NumberOfFindResultsChanged,
 139                         OnHostMsgNumberOfFindResultsChanged)
 140     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SelectFindResultChanged,
 141                         OnHostMsgSelectFindResultChanged)
 142     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SetTickmarks,
 143                         OnHostMsgSetTickmarks)
 144     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_PostMessage,
 145                         OnHostMsgPostMessage)
 146     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SetFullscreen,
 147                         OnHostMsgSetFullscreen)
 148     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetScreenSize,
 149                         OnHostMsgGetScreenSize)
 150     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_RequestInputEvents,
 151                         OnHostMsgRequestInputEvents)
 152     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_ClearInputEvents,
 153                         OnHostMsgClearInputEvents)
 154     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_StartTrackingLatency,
 155                         OnHostMsgStartTrackingLatency)
 156     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_LockMouse,
 157                         OnHostMsgLockMouse)
 158     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_UnlockMouse,
 159                         OnHostMsgUnlockMouse)
 160     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SetCursor,
 161                         OnHostMsgSetCursor)
 162     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SetTextInputType,
 163                         OnHostMsgSetTextInputType)
 164     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_UpdateCaretPosition,
 165                         OnHostMsgUpdateCaretPosition)
 166     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_CancelCompositionText,
 167                         OnHostMsgCancelCompositionText)
 168     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_UpdateSurroundingText,
 169                         OnHostMsgUpdateSurroundingText)
 170     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetDocumentURL,
 171                         OnHostMsgGetDocumentURL)
 172     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_ResolveRelativeToDocument,
 173                         OnHostMsgResolveRelativeToDocument)
 174     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DocumentCanRequest,
 175                         OnHostMsgDocumentCanRequest)
 176     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DocumentCanAccessDocument,
 177                         OnHostMsgDocumentCanAccessDocument)
 178     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetPluginInstanceURL,
 179                         OnHostMsgGetPluginInstanceURL)
 180     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetPluginReferrerURL,
 181                         OnHostMsgGetPluginReferrerURL)
 182     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_PromiseResolved,
 183                         OnHostMsgPromiseResolved)
 184     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_PromiseResolvedWithSession,
 185                         OnHostMsgPromiseResolvedWithSession)
 186     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_PromiseRejected,
 187                         OnHostMsgPromiseRejected)
 188     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SessionMessage,
 189                         OnHostMsgSessionMessage)
 190     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SessionKeysChange,
 191                         OnHostMsgSessionKeysChange)
 192     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SessionExpirationChange,
 193                         OnHostMsgSessionExpirationChange)
 194     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_SessionClosed,
 195                         OnHostMsgSessionClosed)
 196     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_LegacySessionError,
 197                         OnHostMsgLegacySessionError)
 198     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DeliverBlock,
 199                         OnHostMsgDeliverBlock)
 200     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DecoderInitializeDone,
 201                         OnHostMsgDecoderInitializeDone)
 202     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DecoderDeinitializeDone,
 203                         OnHostMsgDecoderDeinitializeDone)
 204     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DecoderResetDone,
 205                         OnHostMsgDecoderResetDone)
 206     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DeliverFrame,
 207                         OnHostMsgDeliverFrame)
 208     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_DeliverSamples,
 209                         OnHostMsgDeliverSamples)
 210 #endif  // !defined(OS_NACL)
 211
 212     // Host -> Plugin messages.
 213     IPC_MESSAGE_HANDLER(PpapiMsg_PPBInstance_MouseLockComplete,
 214                         OnPluginMsgMouseLockComplete)
 215
 216     IPC_MESSAGE_UNHANDLED(handled = false)
 217   IPC_END_MESSAGE_MAP()
 218   return handled;
 219 }
 220
 221 PP_Bool PPB_Instance_Proxy::BindGraphics(PP_Instance instance,
 222                                          PP_Resource device) {
 223   // If device is 0, pass a null HostResource. This signals the host to unbind
 224   // all devices.
 225   PP_Resource pp_resource = 0;
 226   if (device) {
 227     Resource* resource =
 228         PpapiGlobals::Get()->GetResourceTracker()->GetResource(device);
 229     if (!resource || resource->pp_instance() != instance)
 230       return PP_FALSE;
 231     // We need to pass different resource to Graphics 2D, 3D and Compositor
 232     // right now.  Once 3D is migrated to the new design, we should be able to
 233     // unify this.
 234     if (resource->AsPPB_Graphics3D_API()) {
 235       pp_resource = resource->host_resource().host_resource();
 236     } else if (resource->AsPPB_Graphics2D_API() ||
 237                resource->AsPPB_Compositor_API()) {
 238       pp_resource = resource->pp_resource();
 239     } else {
 240       // A bad resource.
 241       return PP_FALSE;
 242     }
 243   }
 244   dispatcher()->Send(new PpapiHostMsg_PPBInstance_BindGraphics(
 245         API_ID_PPB_INSTANCE, instance, pp_resource));
 246   return PP_TRUE;
 247 }
 248
 249 PP_Bool PPB_Instance_Proxy::IsFullFrame(PP_Instance instance) {
 250   PP_Bool result = PP_FALSE;
 251   dispatcher()->Send(new PpapiHostMsg_PPBInstance_IsFullFrame(
 252       API_ID_PPB_INSTANCE, instance, &result));
 253   return result;
 254 }
 255
 256 const ViewData* PPB_Instance_Proxy::GetViewData(PP_Instance instance) {
 257   InstanceData* data = static_cast<PluginDispatcher*>(dispatcher())->
 258       GetInstanceData(instance);
 259   if (!data)
 260     return NULL;
 261   return &data->view;
 262 }
 263
 264 PP_Bool PPB_Instance_Proxy::FlashIsFullscreen(PP_Instance instance) {
 265   // This function is only used for proxying in the renderer process. It is not
 266   // implemented in the plugin process.
 267   NOTREACHED();
 268   return PP_FALSE;
 269 }
 270
 271 PP_Var PPB_Instance_Proxy::GetWindowObject(PP_Instance instance) {
 272   ReceiveSerializedVarReturnValue result;
 273   dispatcher()->Send(new PpapiHostMsg_PPBInstance_GetWindowObject(
 274       API_ID_PPB_INSTANCE, instance, &result));
 275   return result.Return(dispatcher());
 276 }
 277
 278 PP_Var PPB_Instance_Proxy::GetOwnerElementObject(PP_Instance instance) {
 279   ReceiveSerializedVarReturnValue result;
 280   dispatcher()->Send(new PpapiHostMsg_PPBInstance_GetOwnerElementObject(
 281       API_ID_PPB_INSTANCE, instance, &result));
 282   return result.Return(dispatcher());
 283 }
 284
 285 PP_Var PPB_Instance_Proxy::ExecuteScript(PP_Instance instance,
 286                                          PP_Var script,
 287                                          PP_Var* exception) {
 288   ReceiveSerializedException se(dispatcher(), exception);
 289   if (se.IsThrown())
 290     return PP_MakeUndefined();
 291
 292   ReceiveSerializedVarReturnValue result;
 293   dispatcher()->Send(new PpapiHostMsg_PPBInstance_ExecuteScript(
 294       API_ID_PPB_INSTANCE, instance,
 295       SerializedVarSendInput(dispatcher(), script), &se, &result));
 296   return result.Return(dispatcher());
 297 }
 298
 299 uint32_t PPB_Instance_Proxy::GetAudioHardwareOutputSampleRate(
 300     PP_Instance instance) {
 301   uint32_t result = PP_AUDIOSAMPLERATE_NONE;
 302   dispatcher()->Send(
 303       new PpapiHostMsg_PPBInstance_GetAudioHardwareOutputSampleRate(
 304           API_ID_PPB_INSTANCE, instance, &result));
 305   return result;
 306 }
 307
 308 uint32_t PPB_Instance_Proxy::GetAudioHardwareOutputBufferSize(
 309     PP_Instance instance) {
 310   uint32_t result = 0;
 311   dispatcher()->Send(
 312       new PpapiHostMsg_PPBInstance_GetAudioHardwareOutputBufferSize(
 313           API_ID_PPB_INSTANCE, instance, &result));
 314   return result;
 315 }
 316
 317 PP_Var PPB_Instance_Proxy::GetDefaultCharSet(PP_Instance instance) {
 318   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
 319   if (!dispatcher)
 320     return PP_MakeUndefined();
 321
 322   ReceiveSerializedVarReturnValue result;
 323   dispatcher->Send(new PpapiHostMsg_PPBInstance_GetDefaultCharSet(
 324       API_ID_PPB_INSTANCE, instance, &result));
 325   return result.Return(dispatcher);
 326 }
 327
 328 void PPB_Instance_Proxy::SetPluginToHandleFindRequests(PP_Instance instance) {
 329   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SetPluginToHandleFindRequests(
 330       API_ID_PPB_INSTANCE, instance));
 331 }
 332
 333 void PPB_Instance_Proxy::NumberOfFindResultsChanged(PP_Instance instance,
 334                                                     int32_t total,
 335                                                     PP_Bool final_result) {
 336   dispatcher()->Send(new PpapiHostMsg_PPBInstance_NumberOfFindResultsChanged(
 337       API_ID_PPB_INSTANCE, instance, total, final_result));
 338 }
 339
 340 void PPB_Instance_Proxy::SelectedFindResultChanged(PP_Instance instance,
 341                                                    int32_t index) {
 342   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SelectFindResultChanged(
 343       API_ID_PPB_INSTANCE, instance, index));
 344 }
 345
 346 void PPB_Instance_Proxy::SetTickmarks(PP_Instance instance,
 347                                       const PP_Rect* tickmarks,
 348                                       uint32_t count) {
 349   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SetTickmarks(
 350       API_ID_PPB_INSTANCE, instance,
 351       std::vector<PP_Rect>(tickmarks, tickmarks + count)));
 352 }
 353
 354 PP_Bool PPB_Instance_Proxy::IsFullscreen(PP_Instance instance) {
 355   InstanceData* data = static_cast<PluginDispatcher*>(dispatcher())->
 356       GetInstanceData(instance);
 357   if (!data)
 358     return PP_FALSE;
 359   return PP_FromBool(data->view.is_fullscreen);
 360 }
 361
 362 PP_Bool PPB_Instance_Proxy::SetFullscreen(PP_Instance instance,
 363                                           PP_Bool fullscreen) {
 364   PP_Bool result = PP_FALSE;
 365   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SetFullscreen(
 366       API_ID_PPB_INSTANCE, instance, fullscreen, &result));
 367   return result;
 368 }
 369
 370 PP_Bool PPB_Instance_Proxy::GetScreenSize(PP_Instance instance,
 371                                           PP_Size* size) {
 372   PP_Bool result = PP_FALSE;
 373   dispatcher()->Send(new PpapiHostMsg_PPBInstance_GetScreenSize(
 374       API_ID_PPB_INSTANCE, instance, &result, size));
 375   return result;
 376 }
 377
 378 Resource* PPB_Instance_Proxy::GetSingletonResource(PP_Instance instance,
 379                                                    SingletonResourceID id) {
 380   InstanceData* data = static_cast<PluginDispatcher*>(dispatcher())->
 381       GetInstanceData(instance);
 382
 383   InstanceData::SingletonResourceMap::iterator it =
 384       data->singleton_resources.find(id);
 385   if (it != data->singleton_resources.end())
 386     return it->second.get();
 387
 388   scoped_refptr<Resource> new_singleton;
 389   Connection connection(PluginGlobals::Get()->GetBrowserSender(), dispatcher());
 390
 391   switch (id) {
 392     case BROKER_SINGLETON_ID:
 393       new_singleton = new BrokerResource(connection, instance);
 394       break;
 395     case GAMEPAD_SINGLETON_ID:
 396       new_singleton = new GamepadResource(connection, instance);
 397       break;
 398     case ISOLATED_FILESYSTEM_SINGLETON_ID:
 399       new_singleton =
 400           new IsolatedFileSystemPrivateResource(connection, instance);
 401       break;
 402     case NETWORK_PROXY_SINGLETON_ID:
 403       new_singleton = new NetworkProxyResource(connection, instance);
 404       break;
 405     case TRUETYPE_FONT_SINGLETON_ID:
 406       new_singleton = new TrueTypeFontSingletonResource(connection, instance);
 407       break;
 408     case UMA_SINGLETON_ID:
 409       new_singleton = new UMAPrivateResource(connection, instance);
 410       break;
 411 // Flash/trusted resources aren't needed for NaCl.
 412 #if !defined(OS_NACL) && !defined(NACL_WIN64)
 413     case BROWSER_FONT_SINGLETON_ID:
 414       new_singleton = new BrowserFontSingletonResource(connection, instance);
 415       break;
 416     case FLASH_CLIPBOARD_SINGLETON_ID:
 417       new_singleton = new FlashClipboardResource(connection, instance);
 418       break;
 419     case FLASH_FILE_SINGLETON_ID:
 420       new_singleton = new FlashFileResource(connection, instance);
 421       break;
 422     case FLASH_FULLSCREEN_SINGLETON_ID:
 423       new_singleton = new FlashFullscreenResource(connection, instance);
 424       break;
 425     case FLASH_SINGLETON_ID:
 426       new_singleton = new FlashResource(connection, instance,
 427           static_cast<PluginDispatcher*>(dispatcher()));
 428       break;
 429     case PDF_SINGLETON_ID:
 430       new_singleton = new PDFResource(connection, instance);
 431       break;
 432 #else
 433     case BROWSER_FONT_SINGLETON_ID:
 434     case FLASH_CLIPBOARD_SINGLETON_ID:
 435     case FLASH_FILE_SINGLETON_ID:
 436     case FLASH_FULLSCREEN_SINGLETON_ID:
 437     case FLASH_SINGLETON_ID:
 438     case PDF_SINGLETON_ID:
 439       NOTREACHED();
 440       break;
 441 #endif  // !defined(OS_NACL) && !defined(NACL_WIN64)
 442   }
 443
 444   if (!new_singleton.get()) {
 445     // Getting here implies that a constructor is missing in the above switch.
 446     NOTREACHED();
 447     return NULL;
 448   }
 449
 450   data->singleton_resources[id] = new_singleton;
 451   return new_singleton.get();
 452 }
 453
 454 int32_t PPB_Instance_Proxy::RequestInputEvents(PP_Instance instance,
 455                                                uint32_t event_classes) {
 456   dispatcher()->Send(new PpapiHostMsg_PPBInstance_RequestInputEvents(
 457       API_ID_PPB_INSTANCE, instance, false, event_classes));
 458
 459   // We always register for the classes we can handle, this function validates
 460   // the flags so we can notify it if anything was invalid, without requiring
 461   // a sync reply.
 462   return ValidateRequestInputEvents(false, event_classes);
 463 }
 464
 465 int32_t PPB_Instance_Proxy::RequestFilteringInputEvents(
 466     PP_Instance instance,
 467     uint32_t event_classes) {
 468   dispatcher()->Send(new PpapiHostMsg_PPBInstance_RequestInputEvents(
 469       API_ID_PPB_INSTANCE, instance, true, event_classes));
 470
 471   // We always register for the classes we can handle, this function validates
 472   // the flags so we can notify it if anything was invalid, without requiring
 473   // a sync reply.
 474   return ValidateRequestInputEvents(true, event_classes);
 475 }
 476
 477 void PPB_Instance_Proxy::ClearInputEventRequest(PP_Instance instance,
 478                                                 uint32_t event_classes) {
 479   dispatcher()->Send(new PpapiHostMsg_PPBInstance_ClearInputEvents(
 480       API_ID_PPB_INSTANCE, instance, event_classes));
 481 }
 482
 483 void PPB_Instance_Proxy::StartTrackingLatency(PP_Instance instance) {
 484   dispatcher()->Send(new PpapiHostMsg_PPBInstance_StartTrackingLatency(
 485       API_ID_PPB_INSTANCE, instance));
 486 }
 487
 488 void PPB_Instance_Proxy::ZoomChanged(PP_Instance instance,
 489                                      double factor) {
 490   // Not proxied yet.
 491   NOTIMPLEMENTED();
 492 }
 493
 494 void PPB_Instance_Proxy::ZoomLimitsChanged(PP_Instance instance,
 495                                            double minimum_factor,
 496                                            double maximium_factor) {
 497   // Not proxied yet.
 498   NOTIMPLEMENTED();
 499 }
 500
 501 PP_Var PPB_Instance_Proxy::GetDocumentURL(PP_Instance instance,
 502                                           PP_URLComponents_Dev* components) {
 503   ReceiveSerializedVarReturnValue result;
 504   PP_URLComponents_Dev url_components = {{0}};
 505   dispatcher()->Send(new PpapiHostMsg_PPBInstance_GetDocumentURL(
 506       API_ID_PPB_INSTANCE, instance, &url_components, &result));
 507   if (components)
 508     *components = url_components;
 509   return result.Return(dispatcher());
 510 }
 511
 512 #if !defined(OS_NACL)
 513 PP_Var PPB_Instance_Proxy::ResolveRelativeToDocument(
 514     PP_Instance instance,
 515     PP_Var relative,
 516     PP_URLComponents_Dev* components) {
 517   ReceiveSerializedVarReturnValue result;
 518   dispatcher()->Send(new PpapiHostMsg_PPBInstance_ResolveRelativeToDocument(
 519       API_ID_PPB_INSTANCE, instance,
 520       SerializedVarSendInput(dispatcher(), relative),
 521       &result));
 522   return PPB_URLUtil_Shared::ConvertComponentsAndReturnURL(
 523       result.Return(dispatcher()),
 524       components);
 525 }
 526
 527 PP_Bool PPB_Instance_Proxy::DocumentCanRequest(PP_Instance instance,
 528                                                PP_Var url) {
 529   PP_Bool result = PP_FALSE;
 530   dispatcher()->Send(new PpapiHostMsg_PPBInstance_DocumentCanRequest(
 531       API_ID_PPB_INSTANCE, instance,
 532       SerializedVarSendInput(dispatcher(), url),
 533       &result));
 534   return result;
 535 }
 536
 537 PP_Bool PPB_Instance_Proxy::DocumentCanAccessDocument(PP_Instance instance,
 538                                                       PP_Instance target) {
 539   PP_Bool result = PP_FALSE;
 540   dispatcher()->Send(new PpapiHostMsg_PPBInstance_DocumentCanAccessDocument(
 541       API_ID_PPB_INSTANCE, instance, target, &result));
 542   return result;
 543 }
 544
 545 PP_Var PPB_Instance_Proxy::GetPluginInstanceURL(
 546       PP_Instance instance,
 547       PP_URLComponents_Dev* components) {
 548   ReceiveSerializedVarReturnValue result;
 549   dispatcher()->Send(new PpapiHostMsg_PPBInstance_GetPluginInstanceURL(
 550       API_ID_PPB_INSTANCE, instance, &result));
 551   return PPB_URLUtil_Shared::ConvertComponentsAndReturnURL(
 552       result.Return(dispatcher()),
 553       components);
 554 }
 555
 556 PP_Var PPB_Instance_Proxy::GetPluginReferrerURL(
 557       PP_Instance instance,
 558       PP_URLComponents_Dev* components) {
 559   ReceiveSerializedVarReturnValue result;
 560   dispatcher()->Send(new PpapiHostMsg_PPBInstance_GetPluginReferrerURL(
 561       API_ID_PPB_INSTANCE, instance, &result));
 562   return PPB_URLUtil_Shared::ConvertComponentsAndReturnURL(
 563       result.Return(dispatcher()),
 564       components);
 565 }
 566
 567 void PPB_Instance_Proxy::PromiseResolved(PP_Instance instance,
 568                                          uint32 promise_id) {
 569   dispatcher()->Send(new PpapiHostMsg_PPBInstance_PromiseResolved(
 570       API_ID_PPB_INSTANCE, instance, promise_id));
 571 }
 572
 573 void PPB_Instance_Proxy::PromiseResolvedWithSession(PP_Instance instance,
 574                                                     uint32 promise_id,
 575                                                     PP_Var session_id_var) {
 576   dispatcher()->Send(new PpapiHostMsg_PPBInstance_PromiseResolvedWithSession(
 577       API_ID_PPB_INSTANCE, instance, promise_id,
 578       SerializedVarSendInput(dispatcher(), session_id_var)));
 579 }
 580
 581 void PPB_Instance_Proxy::PromiseRejected(PP_Instance instance,
 582                                          uint32 promise_id,
 583                                          PP_CdmExceptionCode exception_code,
 584                                          uint32 system_code,
 585                                          PP_Var error_description_var) {
 586   dispatcher()->Send(new PpapiHostMsg_PPBInstance_PromiseRejected(
 587       API_ID_PPB_INSTANCE,
 588       instance,
 589       promise_id,
 590       exception_code,
 591       system_code,
 592       SerializedVarSendInput(dispatcher(), error_description_var)));
 593 }
 594
 595 void PPB_Instance_Proxy::SessionMessage(PP_Instance instance,
 596                                         PP_Var session_id_var,
 597                                         PP_CdmMessageType message_type,
 598                                         PP_Var message_var,
 599                                         PP_Var legacy_destination_url_var) {
 600   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SessionMessage(
 601       API_ID_PPB_INSTANCE, instance,
 602       SerializedVarSendInput(dispatcher(), session_id_var), message_type,
 603       SerializedVarSendInput(dispatcher(), message_var),
 604       SerializedVarSendInput(dispatcher(), legacy_destination_url_var)));
 605 }
 606
 607 void PPB_Instance_Proxy::SessionKeysChange(
 608     PP_Instance instance,
 609     PP_Var session_id_var,
 610     PP_Bool has_additional_usable_key,
 611     uint32_t key_count,
 612     const struct PP_KeyInformation key_information[]) {
 613   StringVar* session_id = StringVar::FromPPVar(session_id_var);
 614   if (!session_id ||
 615       session_id->value().length() > media::limits::kMaxSessionIdLength) {
 616     NOTREACHED();
 617     return;
 618   }
 619
 620   if (key_count > media::limits::kMaxKeyIds) {
 621     NOTREACHED();
 622     return;
 623   }
 624
 625   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SessionKeysChange(
 626       API_ID_PPB_INSTANCE, instance, session_id->value(),
 627       has_additional_usable_key,
 628       std::vector<PP_KeyInformation>(key_information,
 629                                      key_information + key_count)));
 630 }
 631
 632 void PPB_Instance_Proxy::SessionExpirationChange(PP_Instance instance,
 633                                                  PP_Var session_id_var,
 634                                                  PP_Time new_expiry_time) {
 635   StringVar* session_id = StringVar::FromPPVar(session_id_var);
 636   if (!session_id ||
 637       session_id->value().length() > media::limits::kMaxSessionIdLength) {
 638     NOTREACHED();
 639     return;
 640   }
 641
 642   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SessionExpirationChange(
 643       API_ID_PPB_INSTANCE, instance, session_id->value(), new_expiry_time));
 644 }
 645
 646 void PPB_Instance_Proxy::SessionClosed(PP_Instance instance,
 647                                        PP_Var session_id_var) {
 648   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SessionClosed(
 649       API_ID_PPB_INSTANCE, instance,
 650       SerializedVarSendInput(dispatcher(), session_id_var)));
 651 }
 652
 653 void PPB_Instance_Proxy::LegacySessionError(PP_Instance instance,
 654                                             PP_Var session_id_var,
 655                                             PP_CdmExceptionCode exception_code,
 656                                             uint32 system_code,
 657                                             PP_Var error_description_var) {
 658   dispatcher()->Send(new PpapiHostMsg_PPBInstance_LegacySessionError(
 659       API_ID_PPB_INSTANCE, instance,
 660       SerializedVarSendInput(dispatcher(), session_id_var), exception_code,
 661       system_code,
 662       SerializedVarSendInput(dispatcher(), error_description_var)));
 663 }
 664
 665 void PPB_Instance_Proxy::DeliverBlock(PP_Instance instance,
 666                                       PP_Resource decrypted_block,
 667                                       const PP_DecryptedBlockInfo* block_info) {
 668   PP_Resource decrypted_block_host_resource = 0;
 669
 670   if (decrypted_block) {
 671     Resource* object =
 672         PpapiGlobals::Get()->GetResourceTracker()->GetResource(decrypted_block);
 673     if (!object || object->pp_instance() != instance) {
 674       NOTREACHED();
 675       return;
 676     }
 677     decrypted_block_host_resource = object->host_resource().host_resource();
 678   }
 679
 680   std::string serialized_block_info;
 681   if (!SerializeBlockInfo(*block_info, &serialized_block_info)) {
 682     NOTREACHED();
 683     return;
 684   }
 685
 686   dispatcher()->Send(
 687       new PpapiHostMsg_PPBInstance_DeliverBlock(API_ID_PPB_INSTANCE,
 688           instance,
 689           decrypted_block_host_resource,
 690           serialized_block_info));
 691 }
 692
 693 void PPB_Instance_Proxy::DecoderInitializeDone(
 694     PP_Instance instance,
 695     PP_DecryptorStreamType decoder_type,
 696     uint32_t request_id,
 697     PP_Bool success) {
 698   dispatcher()->Send(
 699       new PpapiHostMsg_PPBInstance_DecoderInitializeDone(
 700           API_ID_PPB_INSTANCE,
 701           instance,
 702           decoder_type,
 703           request_id,
 704           success));
 705 }
 706
 707 void PPB_Instance_Proxy::DecoderDeinitializeDone(
 708     PP_Instance instance,
 709     PP_DecryptorStreamType decoder_type,
 710     uint32_t request_id) {
 711   dispatcher()->Send(
 712       new PpapiHostMsg_PPBInstance_DecoderDeinitializeDone(
 713           API_ID_PPB_INSTANCE,
 714           instance,
 715           decoder_type,
 716           request_id));
 717 }
 718
 719 void PPB_Instance_Proxy::DecoderResetDone(PP_Instance instance,
 720                                           PP_DecryptorStreamType decoder_type,
 721                                           uint32_t request_id) {
 722   dispatcher()->Send(
 723       new PpapiHostMsg_PPBInstance_DecoderResetDone(
 724           API_ID_PPB_INSTANCE,
 725           instance,
 726           decoder_type,
 727           request_id));
 728 }
 729
 730 void PPB_Instance_Proxy::DeliverFrame(PP_Instance instance,
 731                                       PP_Resource decrypted_frame,
 732                                       const PP_DecryptedFrameInfo* frame_info) {
 733   PP_Resource host_resource = 0;
 734   if (decrypted_frame != 0) {
 735     ResourceTracker* tracker = PpapiGlobals::Get()->GetResourceTracker();
 736     Resource* object = tracker->GetResource(decrypted_frame);
 737
 738     if (!object || object->pp_instance() != instance) {
 739       NOTREACHED();
 740       return;
 741     }
 742
 743     host_resource = object->host_resource().host_resource();
 744   }
 745
 746   std::string serialized_frame_info;
 747   if (!SerializeBlockInfo(*frame_info, &serialized_frame_info)) {
 748     NOTREACHED();
 749     return;
 750   }
 751
 752   dispatcher()->Send(
 753       new PpapiHostMsg_PPBInstance_DeliverFrame(API_ID_PPB_INSTANCE,
 754                                                 instance,
 755                                                 host_resource,
 756                                                 serialized_frame_info));
 757 }
 758
 759 void PPB_Instance_Proxy::DeliverSamples(
 760     PP_Instance instance,
 761     PP_Resource decrypted_samples,
 762     const PP_DecryptedSampleInfo* sample_info) {
 763   PP_Resource host_resource = 0;
 764   if (decrypted_samples != 0) {
 765     ResourceTracker* tracker = PpapiGlobals::Get()->GetResourceTracker();
 766     Resource* object = tracker->GetResource(decrypted_samples);
 767
 768     if (!object || object->pp_instance() != instance) {
 769       NOTREACHED();
 770       return;
 771     }
 772
 773     host_resource = object->host_resource().host_resource();
 774   }
 775
 776   std::string serialized_sample_info;
 777   if (!SerializeBlockInfo(*sample_info, &serialized_sample_info)) {
 778     NOTREACHED();
 779     return;
 780   }
 781
 782   dispatcher()->Send(
 783       new PpapiHostMsg_PPBInstance_DeliverSamples(API_ID_PPB_INSTANCE,
 784                                                   instance,
 785                                                   host_resource,
 786                                                   serialized_sample_info));
 787 }
 788 #endif  // !defined(OS_NACL)
 789
 790 void PPB_Instance_Proxy::PostMessage(PP_Instance instance,
 791                                      PP_Var message) {
 792   dispatcher()->Send(new PpapiHostMsg_PPBInstance_PostMessage(
 793       API_ID_PPB_INSTANCE,
 794       instance, SerializedVarSendInputShmem(dispatcher(), message,
 795                                             instance)));
 796 }
 797
 798 int32_t PPB_Instance_Proxy::RegisterMessageHandler(
 799     PP_Instance instance,
 800     void* user_data,
 801     const PPP_MessageHandler_0_2* handler,
 802     PP_Resource message_loop) {
 803   InstanceData* data =
 804       static_cast<PluginDispatcher*>(dispatcher())->GetInstanceData(instance);
 805   if (!data)
 806     return PP_ERROR_BADARGUMENT;
 807
 808   int32_t result = PP_ERROR_FAILED;
 809   scoped_ptr<MessageHandler> message_handler = MessageHandler::Create(
 810       instance, handler, user_data, message_loop, &result);
 811   if (message_handler)
 812     data->message_handler = message_handler.Pass();
 813   return result;
 814 }
 815
 816 void PPB_Instance_Proxy::UnregisterMessageHandler(PP_Instance instance) {
 817   InstanceData* data =
 818       static_cast<PluginDispatcher*>(dispatcher())->GetInstanceData(instance);
 819   if (!data)
 820     return;
 821   data->message_handler.reset();
 822 }
 823
 824 PP_Bool PPB_Instance_Proxy::SetCursor(PP_Instance instance,
 825                                       PP_MouseCursor_Type type,
 826                                       PP_Resource image,
 827                                       const PP_Point* hot_spot) {
 828   // Some of these parameters are important for security. This check is in the
 829   // plugin process just for the convenience of the caller (since we don't
 830   // bother returning errors from the other process with a sync message). The
 831   // parameters will be validated again in the renderer.
 832   if (!ValidateSetCursorParams(type, image, hot_spot))
 833     return PP_FALSE;
 834
 835   HostResource image_host_resource;
 836   if (image) {
 837     Resource* cursor_image =
 838         PpapiGlobals::Get()->GetResourceTracker()->GetResource(image);
 839     if (!cursor_image || cursor_image->pp_instance() != instance)
 840       return PP_FALSE;
 841     image_host_resource = cursor_image->host_resource();
 842   }
 843
 844   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SetCursor(
 845       API_ID_PPB_INSTANCE, instance, static_cast<int32_t>(type),
 846       image_host_resource, hot_spot ? *hot_spot : PP_MakePoint(0, 0)));
 847   return PP_TRUE;
 848 }
 849
 850 int32_t PPB_Instance_Proxy::LockMouse(PP_Instance instance,
 851                                       scoped_refptr<TrackedCallback> callback) {
 852   // Save the mouse callback on the instance data.
 853   InstanceData* data = static_cast<PluginDispatcher*>(dispatcher())->
 854       GetInstanceData(instance);
 855   if (!data)
 856     return PP_ERROR_BADARGUMENT;
 857   if (TrackedCallback::IsPending(data->mouse_lock_callback))
 858     return PP_ERROR_INPROGRESS;  // Already have a pending callback.
 859   data->mouse_lock_callback = callback;
 860
 861   dispatcher()->Send(new PpapiHostMsg_PPBInstance_LockMouse(
 862       API_ID_PPB_INSTANCE, instance));
 863   return PP_OK_COMPLETIONPENDING;
 864 }
 865
 866 void PPB_Instance_Proxy::UnlockMouse(PP_Instance instance) {
 867   dispatcher()->Send(new PpapiHostMsg_PPBInstance_UnlockMouse(
 868       API_ID_PPB_INSTANCE, instance));
 869 }
 870
 871 void PPB_Instance_Proxy::SetTextInputType(PP_Instance instance,
 872                                           PP_TextInput_Type type) {
 873   CancelAnyPendingRequestSurroundingText(instance);
 874   dispatcher()->Send(new PpapiHostMsg_PPBInstance_SetTextInputType(
 875       API_ID_PPB_INSTANCE, instance, type));
 876 }
 877
 878 void PPB_Instance_Proxy::UpdateCaretPosition(PP_Instance instance,
 879                                              const PP_Rect& caret,
 880                                              const PP_Rect& bounding_box) {
 881   dispatcher()->Send(new PpapiHostMsg_PPBInstance_UpdateCaretPosition(
 882       API_ID_PPB_INSTANCE, instance, caret, bounding_box));
 883 }
 884
 885 void PPB_Instance_Proxy::CancelCompositionText(PP_Instance instance) {
 886   CancelAnyPendingRequestSurroundingText(instance);
 887   dispatcher()->Send(new PpapiHostMsg_PPBInstance_CancelCompositionText(
 888       API_ID_PPB_INSTANCE, instance));
 889 }
 890
 891 void PPB_Instance_Proxy::SelectionChanged(PP_Instance instance) {
 892   // The "right" way to do this is to send the message to the host. However,
 893   // all it will do is call RequestSurroundingText with a hardcoded number of
 894   // characters in response, which is an entire IPC round-trip.
 895   //
 896   // We can avoid this round-trip by just implementing the
 897   // RequestSurroundingText logic in the plugin process. If the logic in the
 898   // host becomes more complex (like a more adaptive number of characters),
 899   // we'll need to reevanuate whether we want to do the round trip instead.
 900   //
 901   // Be careful to post a task to avoid reentering the plugin.
 902
 903   InstanceData* data =
 904       static_cast<PluginDispatcher*>(dispatcher())->GetInstanceData(instance);
 905   if (!data)
 906     return;
 907   data->should_do_request_surrounding_text = true;
 908
 909   if (!data->is_request_surrounding_text_pending) {
 910     PpapiGlobals::Get()->GetMainThreadMessageLoop()->PostTask(
 911         FROM_HERE,
 912         RunWhileLocked(base::Bind(&RequestSurroundingText, instance)));
 913     data->is_request_surrounding_text_pending = true;
 914   }
 915 }
 916
 917 void PPB_Instance_Proxy::UpdateSurroundingText(PP_Instance instance,
 918                                                const char* text,
 919                                                uint32_t caret,
 920                                                uint32_t anchor) {
 921   dispatcher()->Send(new PpapiHostMsg_PPBInstance_UpdateSurroundingText(
 922       API_ID_PPB_INSTANCE, instance, text, caret, anchor));
 923 }
 924
 925 #if !defined(OS_NACL)
 926 void PPB_Instance_Proxy::OnHostMsgGetWindowObject(
 927     PP_Instance instance,
 928     SerializedVarReturnValue result) {
 929   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
 930     return;
 931   EnterInstanceNoLock enter(instance);
 932   if (enter.succeeded())
 933     result.Return(dispatcher(), enter.functions()->GetWindowObject(instance));
 934 }
 935
 936 void PPB_Instance_Proxy::OnHostMsgGetOwnerElementObject(
 937     PP_Instance instance,
 938     SerializedVarReturnValue result) {
 939   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
 940     return;
 941   EnterInstanceNoLock enter(instance);
 942   if (enter.succeeded()) {
 943     result.Return(dispatcher(),
 944                   enter.functions()->GetOwnerElementObject(instance));
 945   }
 946 }
 947
 948 void PPB_Instance_Proxy::OnHostMsgBindGraphics(PP_Instance instance,
 949                                                PP_Resource device) {
 950   // Note that we ignroe the return value here. Otherwise, this would need to
 951   // be a slow sync call, and the plugin side of the proxy will have already
 952   // validated the resources, so we shouldn't see errors here that weren't
 953   // already caught.
 954   EnterInstanceNoLock enter(instance);
 955   if (enter.succeeded())
 956     enter.functions()->BindGraphics(instance, device);
 957 }
 958
 959 void PPB_Instance_Proxy::OnHostMsgGetAudioHardwareOutputSampleRate(
 960     PP_Instance instance, uint32_t* result) {
 961   EnterInstanceNoLock enter(instance);
 962   if (enter.succeeded())
 963     *result = enter.functions()->GetAudioHardwareOutputSampleRate(instance);
 964 }
 965
 966 void PPB_Instance_Proxy::OnHostMsgGetAudioHardwareOutputBufferSize(
 967     PP_Instance instance, uint32_t* result) {
 968   EnterInstanceNoLock enter(instance);
 969   if (enter.succeeded())
 970     *result = enter.functions()->GetAudioHardwareOutputBufferSize(instance);
 971 }
 972
 973 void PPB_Instance_Proxy::OnHostMsgIsFullFrame(PP_Instance instance,
 974                                               PP_Bool* result) {
 975   EnterInstanceNoLock enter(instance);
 976   if (enter.succeeded())
 977     *result = enter.functions()->IsFullFrame(instance);
 978 }
 979
 980 void PPB_Instance_Proxy::OnHostMsgExecuteScript(
 981     PP_Instance instance,
 982     SerializedVarReceiveInput script,
 983     SerializedVarOutParam out_exception,
 984     SerializedVarReturnValue result) {
 985   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
 986     return;
 987   EnterInstanceNoLock enter(instance);
 988   if (enter.failed())
 989     return;
 990
 991   if (dispatcher()->IsPlugin())
 992     NOTREACHED();
 993   else
 994     static_cast<HostDispatcher*>(dispatcher())->set_allow_plugin_reentrancy();
 995
 996   result.Return(dispatcher(), enter.functions()->ExecuteScript(
 997       instance,
 998       script.Get(dispatcher()),
 999       out_exception.OutParam(dispatcher())));
1000 }
1001
1002 void PPB_Instance_Proxy::OnHostMsgGetDefaultCharSet(
1003     PP_Instance instance,
1004     SerializedVarReturnValue result) {
1005   if (!dispatcher()->permissions().HasPermission(PERMISSION_DEV))
1006     return;
1007   EnterInstanceNoLock enter(instance);
1008   if (enter.succeeded())
1009     result.Return(dispatcher(), enter.functions()->GetDefaultCharSet(instance));
1010 }
1011
1012 void PPB_Instance_Proxy::OnHostMsgSetPluginToHandleFindRequests(
1013     PP_Instance instance) {
1014   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1015     return;
1016   EnterInstanceNoLock enter(instance);
1017   if (enter.succeeded())
1018     enter.functions()->SetPluginToHandleFindRequests(instance);
1019 }
1020
1021 void PPB_Instance_Proxy::OnHostMsgNumberOfFindResultsChanged(
1022     PP_Instance instance,
1023     int32_t total,
1024     PP_Bool final_result) {
1025   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1026     return;
1027   EnterInstanceNoLock enter(instance);
1028   if (enter.succeeded()) {
1029     enter.functions()->NumberOfFindResultsChanged(
1030         instance, total, final_result);
1031   }
1032 }
1033
1034 void PPB_Instance_Proxy::OnHostMsgSelectFindResultChanged(
1035     PP_Instance instance,
1036     int32_t index) {
1037   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1038     return;
1039   EnterInstanceNoLock enter(instance);
1040   if (enter.succeeded())
1041     enter.functions()->SelectedFindResultChanged(instance, index);
1042 }
1043
1044 void PPB_Instance_Proxy::OnHostMsgSetTickmarks(
1045     PP_Instance instance,
1046     const std::vector<PP_Rect>& tickmarks) {
1047   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1048     return;
1049   const PP_Rect* array = tickmarks.empty() ? NULL : &tickmarks[0];
1050   EnterInstanceNoLock enter(instance);
1051   if (enter.succeeded()) {
1052     enter.functions()->SetTickmarks(instance,
1053                                     array,
1054                                     static_cast<uint32_t>(tickmarks.size()));
1055   }
1056 }
1057
1058 void PPB_Instance_Proxy::OnHostMsgSetFullscreen(PP_Instance instance,
1059                                                 PP_Bool fullscreen,
1060                                                 PP_Bool* result) {
1061   EnterInstanceNoLock enter(instance);
1062   if (enter.succeeded())
1063     *result = enter.functions()->SetFullscreen(instance, fullscreen);
1064 }
1065
1066
1067 void PPB_Instance_Proxy::OnHostMsgGetScreenSize(PP_Instance instance,
1068                                                 PP_Bool* result,
1069                                                 PP_Size* size) {
1070   EnterInstanceNoLock enter(instance);
1071   if (enter.succeeded())
1072     *result = enter.functions()->GetScreenSize(instance, size);
1073 }
1074
1075 void PPB_Instance_Proxy::OnHostMsgRequestInputEvents(PP_Instance instance,
1076                                                      bool is_filtering,
1077                                                      uint32_t event_classes) {
1078   EnterInstanceNoLock enter(instance);
1079   if (enter.succeeded()) {
1080     if (is_filtering)
1081       enter.functions()->RequestFilteringInputEvents(instance, event_classes);
1082     else
1083       enter.functions()->RequestInputEvents(instance, event_classes);
1084   }
1085 }
1086
1087 void PPB_Instance_Proxy::OnHostMsgClearInputEvents(PP_Instance instance,
1088                                                    uint32_t event_classes) {
1089   EnterInstanceNoLock enter(instance);
1090   if (enter.succeeded())
1091     enter.functions()->ClearInputEventRequest(instance, event_classes);
1092 }
1093
1094 void PPB_Instance_Proxy::OnHostMsgStartTrackingLatency(PP_Instance instance) {
1095   EnterInstanceNoLock enter(instance);
1096   if (enter.succeeded())
1097     enter.functions()->StartTrackingLatency(instance);
1098 }
1099
1100 void PPB_Instance_Proxy::OnHostMsgPostMessage(
1101     PP_Instance instance,
1102     SerializedVarReceiveInput message) {
1103   EnterInstanceNoLock enter(instance);
1104   if (!message.is_valid_var()) {
1105     PpapiGlobals::Get()->LogWithSource(
1106         instance, PP_LOGLEVEL_ERROR, std::string(), kSerializationError);
1107     return;
1108   }
1109
1110   if (enter.succeeded())
1111     enter.functions()->PostMessage(instance,
1112                                    message.GetForInstance(dispatcher(),
1113                                                           instance));
1114 }
1115
1116 void PPB_Instance_Proxy::OnHostMsgLockMouse(PP_Instance instance) {
1117   // Need to be careful to always issue the callback.
1118   pp::CompletionCallback cb = callback_factory_.NewCallback(
1119       &PPB_Instance_Proxy::MouseLockCompleteInHost, instance);
1120
1121   EnterInstanceNoLock enter(instance, cb.pp_completion_callback());
1122   if (enter.succeeded())
1123     enter.SetResult(enter.functions()->LockMouse(instance, enter.callback()));
1124 }
1125
1126 void PPB_Instance_Proxy::OnHostMsgUnlockMouse(PP_Instance instance) {
1127   EnterInstanceNoLock enter(instance);
1128   if (enter.succeeded())
1129     enter.functions()->UnlockMouse(instance);
1130 }
1131
1132 void PPB_Instance_Proxy::OnHostMsgGetDocumentURL(
1133     PP_Instance instance,
1134     PP_URLComponents_Dev* components,
1135     SerializedVarReturnValue result) {
1136   if (!dispatcher()->permissions().HasPermission(PERMISSION_DEV))
1137     return;
1138   EnterInstanceNoLock enter(instance);
1139   if (enter.succeeded()) {
1140     PP_Var document_url = enter.functions()->GetDocumentURL(instance,
1141                                                             components);
1142     result.Return(dispatcher(), document_url);
1143   }
1144 }
1145
1146 void PPB_Instance_Proxy::OnHostMsgResolveRelativeToDocument(
1147     PP_Instance instance,
1148     SerializedVarReceiveInput relative,
1149     SerializedVarReturnValue result) {
1150   if (!dispatcher()->permissions().HasPermission(PERMISSION_DEV))
1151     return;
1152   EnterInstanceNoLock enter(instance);
1153   if (enter.succeeded()) {
1154     result.Return(dispatcher(),
1155                   enter.functions()->ResolveRelativeToDocument(
1156                       instance, relative.Get(dispatcher()), NULL));
1157   }
1158 }
1159
1160 void PPB_Instance_Proxy::OnHostMsgDocumentCanRequest(
1161     PP_Instance instance,
1162     SerializedVarReceiveInput url,
1163     PP_Bool* result) {
1164   if (!dispatcher()->permissions().HasPermission(PERMISSION_DEV))
1165     return;
1166   EnterInstanceNoLock enter(instance);
1167   if (enter.succeeded()) {
1168     *result = enter.functions()->DocumentCanRequest(instance,
1169                                                     url.Get(dispatcher()));
1170   }
1171 }
1172
1173 void PPB_Instance_Proxy::OnHostMsgDocumentCanAccessDocument(PP_Instance active,
1174                                                             PP_Instance target,
1175                                                             PP_Bool* result) {
1176   if (!dispatcher()->permissions().HasPermission(PERMISSION_DEV))
1177     return;
1178   EnterInstanceNoLock enter(active);
1179   if (enter.succeeded())
1180     *result = enter.functions()->DocumentCanAccessDocument(active, target);
1181 }
1182
1183 void PPB_Instance_Proxy::OnHostMsgGetPluginInstanceURL(
1184     PP_Instance instance,
1185     SerializedVarReturnValue result) {
1186   if (!dispatcher()->permissions().HasPermission(PERMISSION_DEV))
1187     return;
1188   EnterInstanceNoLock enter(instance);
1189   if (enter.succeeded()) {
1190     result.Return(dispatcher(),
1191                   enter.functions()->GetPluginInstanceURL(instance, NULL));
1192   }
1193 }
1194
1195 void PPB_Instance_Proxy::OnHostMsgGetPluginReferrerURL(
1196     PP_Instance instance,
1197     SerializedVarReturnValue result) {
1198   if (!dispatcher()->permissions().HasPermission(PERMISSION_DEV))
1199     return;
1200   EnterInstanceNoLock enter(instance);
1201   if (enter.succeeded()) {
1202     result.Return(dispatcher(),
1203                   enter.functions()->GetPluginReferrerURL(instance, NULL));
1204   }
1205 }
1206
1207 void PPB_Instance_Proxy::OnHostMsgPromiseResolved(PP_Instance instance,
1208                                                   uint32_t promise_id) {
1209   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1210     return;
1211   EnterInstanceNoLock enter(instance);
1212   if (enter.succeeded()) {
1213     enter.functions()->PromiseResolved(instance, promise_id);
1214   }
1215 }
1216
1217 void PPB_Instance_Proxy::OnHostMsgPromiseResolvedWithSession(
1218     PP_Instance instance,
1219     uint32_t promise_id,
1220     SerializedVarReceiveInput session_id) {
1221   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1222     return;
1223   EnterInstanceNoLock enter(instance);
1224   if (enter.succeeded()) {
1225     enter.functions()->PromiseResolvedWithSession(instance, promise_id,
1226                                                   session_id.Get(dispatcher()));
1227   }
1228 }
1229
1230 void PPB_Instance_Proxy::OnHostMsgPromiseRejected(
1231     PP_Instance instance,
1232     uint32_t promise_id,
1233     PP_CdmExceptionCode exception_code,
1234     uint32_t system_code,
1235     SerializedVarReceiveInput error_description) {
1236   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1237     return;
1238   EnterInstanceNoLock enter(instance);
1239   if (enter.succeeded()) {
1240     enter.functions()->PromiseRejected(instance,
1241                                        promise_id,
1242                                        exception_code,
1243                                        system_code,
1244                                        error_description.Get(dispatcher()));
1245   }
1246 }
1247
1248 void PPB_Instance_Proxy::OnHostMsgSessionMessage(
1249     PP_Instance instance,
1250     SerializedVarReceiveInput session_id,
1251     PP_CdmMessageType message_type,
1252     SerializedVarReceiveInput message,
1253     SerializedVarReceiveInput legacy_destination_url) {
1254   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1255     return;
1256   EnterInstanceNoLock enter(instance);
1257   if (enter.succeeded()) {
1258     enter.functions()->SessionMessage(instance, session_id.Get(dispatcher()),
1259                                       message_type, message.Get(dispatcher()),
1260                                       legacy_destination_url.Get(dispatcher()));
1261   }
1262 }
1263
1264 void PPB_Instance_Proxy::OnHostMsgSessionKeysChange(
1265     PP_Instance instance,
1266     const std::string& session_id,
1267     PP_Bool has_additional_usable_key,
1268     const std::vector<PP_KeyInformation>& key_information) {
1269   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1270     return;
1271
1272   if (key_information.size() > media::limits::kMaxKeyIds) {
1273     NOTREACHED();
1274     return;
1275   }
1276
1277   EnterInstanceNoLock enter(instance);
1278   if (enter.succeeded()) {
1279     ScopedPPVar session_id_var(ScopedPPVar::PassRef(),
1280                                StringVar::StringToPPVar(session_id));
1281     enter.functions()->SessionKeysChange(
1282         instance, session_id_var.get(), has_additional_usable_key,
1283         base::checked_cast<uint32_t>(key_information.size()),
1284         vector_as_array(&key_information));
1285   }
1286 }
1287
1288 void PPB_Instance_Proxy::OnHostMsgSessionExpirationChange(
1289     PP_Instance instance,
1290     const std::string& session_id,
1291     PP_Time new_expiry_time) {
1292   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1293     return;
1294   EnterInstanceNoLock enter(instance);
1295   if (enter.succeeded()) {
1296     ScopedPPVar session_id_var(ScopedPPVar::PassRef(),
1297                                StringVar::StringToPPVar(session_id));
1298     enter.functions()->SessionExpirationChange(instance, session_id_var.get(),
1299                                                new_expiry_time);
1300   }
1301 }
1302
1303 void PPB_Instance_Proxy::OnHostMsgSessionClosed(
1304     PP_Instance instance,
1305     SerializedVarReceiveInput session_id) {
1306   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1307     return;
1308   EnterInstanceNoLock enter(instance);
1309   if (enter.succeeded()) {
1310     enter.functions()->SessionClosed(instance, session_id.Get(dispatcher()));
1311   }
1312 }
1313
1314 void PPB_Instance_Proxy::OnHostMsgLegacySessionError(
1315     PP_Instance instance,
1316     SerializedVarReceiveInput session_id,
1317     PP_CdmExceptionCode exception_code,
1318     uint32_t system_code,
1319     SerializedVarReceiveInput error_description) {
1320   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1321     return;
1322   EnterInstanceNoLock enter(instance);
1323   if (enter.succeeded()) {
1324     enter.functions()->LegacySessionError(
1325         instance, session_id.Get(dispatcher()), exception_code, system_code,
1326         error_description.Get(dispatcher()));
1327   }
1328 }
1329
1330 void PPB_Instance_Proxy::OnHostMsgDeliverBlock(
1331     PP_Instance instance,
1332     PP_Resource decrypted_block,
1333     const std::string& serialized_block_info) {
1334   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1335     return;
1336   PP_DecryptedBlockInfo block_info;
1337   if (!DeserializeBlockInfo(serialized_block_info, &block_info))
1338     return;
1339
1340   EnterInstanceNoLock enter(instance);
1341   if (enter.succeeded())
1342     enter.functions()->DeliverBlock(instance, decrypted_block, &block_info);
1343 }
1344
1345 void PPB_Instance_Proxy::OnHostMsgDecoderInitializeDone(
1346     PP_Instance instance,
1347     PP_DecryptorStreamType decoder_type,
1348     uint32_t request_id,
1349     PP_Bool success) {
1350   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1351     return;
1352   EnterInstanceNoLock enter(instance);
1353   if (enter.succeeded()) {
1354     enter.functions()->DecoderInitializeDone(instance,
1355                                              decoder_type,
1356                                              request_id,
1357                                              success);
1358   }
1359 }
1360
1361 void PPB_Instance_Proxy::OnHostMsgDecoderDeinitializeDone(
1362     PP_Instance instance,
1363     PP_DecryptorStreamType decoder_type,
1364     uint32_t request_id) {
1365   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1366     return;
1367   EnterInstanceNoLock enter(instance);
1368   if (enter.succeeded())
1369     enter.functions()->DecoderDeinitializeDone(instance,
1370                                                decoder_type,
1371                                                request_id);
1372 }
1373
1374 void PPB_Instance_Proxy::OnHostMsgDecoderResetDone(
1375     PP_Instance instance,
1376     PP_DecryptorStreamType decoder_type,
1377     uint32_t request_id) {
1378   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1379     return;
1380   EnterInstanceNoLock enter(instance);
1381   if (enter.succeeded())
1382     enter.functions()->DecoderResetDone(instance, decoder_type, request_id);
1383 }
1384
1385 void PPB_Instance_Proxy::OnHostMsgDeliverFrame(
1386     PP_Instance instance,
1387     PP_Resource decrypted_frame,
1388     const std::string& serialized_frame_info) {
1389   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1390     return;
1391   PP_DecryptedFrameInfo frame_info;
1392   if (!DeserializeBlockInfo(serialized_frame_info, &frame_info))
1393     return;
1394
1395   EnterInstanceNoLock enter(instance);
1396   if (enter.succeeded())
1397     enter.functions()->DeliverFrame(instance, decrypted_frame, &frame_info);
1398 }
1399
1400 void PPB_Instance_Proxy::OnHostMsgDeliverSamples(
1401     PP_Instance instance,
1402     PP_Resource audio_frames,
1403     const std::string& serialized_sample_info) {
1404   if (!dispatcher()->permissions().HasPermission(PERMISSION_PRIVATE))
1405     return;
1406   PP_DecryptedSampleInfo sample_info;
1407   if (!DeserializeBlockInfo(serialized_sample_info, &sample_info))
1408     return;
1409
1410   EnterInstanceNoLock enter(instance);
1411   if (enter.succeeded())
1412     enter.functions()->DeliverSamples(instance, audio_frames, &sample_info);
1413 }
1414
1415 void PPB_Instance_Proxy::OnHostMsgSetCursor(
1416     PP_Instance instance,
1417     int32_t type,
1418     const ppapi::HostResource& custom_image,
1419     const PP_Point& hot_spot) {
1420   // This API serves PPB_CursorControl_Dev and PPB_MouseCursor, so is public.
1421   EnterInstanceNoLock enter(instance);
1422   if (enter.succeeded()) {
1423     enter.functions()->SetCursor(
1424         instance, static_cast<PP_MouseCursor_Type>(type),
1425         custom_image.host_resource(), &hot_spot);
1426   }
1427 }
1428
1429 void PPB_Instance_Proxy::OnHostMsgSetTextInputType(PP_Instance instance,
1430                                                    PP_TextInput_Type type) {
1431   EnterInstanceNoLock enter(instance);
1432   if (enter.succeeded())
1433     enter.functions()->SetTextInputType(instance, type);
1434 }
1435
1436 void PPB_Instance_Proxy::OnHostMsgUpdateCaretPosition(
1437     PP_Instance instance,
1438     const PP_Rect& caret,
1439     const PP_Rect& bounding_box) {
1440   EnterInstanceNoLock enter(instance);
1441   if (enter.succeeded())
1442     enter.functions()->UpdateCaretPosition(instance, caret, bounding_box);
1443 }
1444
1445 void PPB_Instance_Proxy::OnHostMsgCancelCompositionText(PP_Instance instance) {
1446   EnterInstanceNoLock enter(instance);
1447   if (enter.succeeded())
1448     enter.functions()->CancelCompositionText(instance);
1449 }
1450
1451 void PPB_Instance_Proxy::OnHostMsgUpdateSurroundingText(
1452     PP_Instance instance,
1453     const std::string& text,
1454     uint32_t caret,
1455     uint32_t anchor) {
1456   EnterInstanceNoLock enter(instance);
1457   if (enter.succeeded()) {
1458     enter.functions()->UpdateSurroundingText(instance, text.c_str(), caret,
1459                                              anchor);
1460   }
1461 }
1462 #endif  // !defined(OS_NACL)
1463
1464 void PPB_Instance_Proxy::OnPluginMsgMouseLockComplete(PP_Instance instance,
1465                                                       int32_t result) {
1466   if (!dispatcher()->IsPlugin())
1467     return;
1468
1469   // Save the mouse callback on the instance data.
1470   InstanceData* data = static_cast<PluginDispatcher*>(dispatcher())->
1471       GetInstanceData(instance);
1472   if (!data)
1473     return;  // Instance was probably deleted.
1474   if (!TrackedCallback::IsPending(data->mouse_lock_callback)) {
1475     NOTREACHED();
1476     return;
1477   }
1478   data->mouse_lock_callback->Run(result);
1479 }
1480
1481 #if !defined(OS_NACL)
1482 void PPB_Instance_Proxy::MouseLockCompleteInHost(int32_t result,
1483                                                  PP_Instance instance) {
1484   dispatcher()->Send(new PpapiMsg_PPBInstance_MouseLockComplete(
1485       API_ID_PPB_INSTANCE, instance, result));
1486 }
1487 #endif  // !defined(OS_NACL)
1488
1489 void PPB_Instance_Proxy::CancelAnyPendingRequestSurroundingText(
1490     PP_Instance instance) {
1491   InstanceData* data = static_cast<PluginDispatcher*>(dispatcher())->
1492       GetInstanceData(instance);
1493   if (!data)
1494     return;  // Instance was probably deleted.
1495   data->should_do_request_surrounding_text = false;
1496 }
1497
1498 }  // namespace proxy
1499 }  // namespace ppapi