content/child/npapi/plugin_instance.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 "content/child/npapi/plugin_instance.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "base/file_util.h"
  10 #include "base/message_loop/message_loop.h"
  11 #include "base/strings/string_number_conversions.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "build/build_config.h"
  14 #include "content/child/npapi/plugin_host.h"
  15 #include "content/child/npapi/plugin_lib.h"
  16 #include "content/child/npapi/plugin_stream_url.h"
  17 #include "content/child/npapi/plugin_string_stream.h"
  18 #include "content/child/npapi/webplugin.h"
  19 #include "content/child/npapi/webplugin_delegate.h"
  20 #include "content/child/npapi/webplugin_resource_client.h"
  21 #include "content/public/common/content_constants.h"
  22 #include "content/public/common/content_switches.h"
  23 #include "net/base/escape.h"
  24
  25 #if defined(OS_MACOSX)
  26 #include <ApplicationServices/ApplicationServices.h>
  27 #endif
  28
  29 namespace content {
  30
  31 PluginInstance::PluginInstance(PluginLib* plugin, const std::string& mime_type)
  32     : plugin_(plugin),
  33       npp_(0),
  34       host_(PluginHost::Singleton()),
  35       npp_functions_(plugin->functions()),
  36       window_handle_(0),
  37       windowless_(false),
  38       transparent_(true),
  39       webplugin_(0),
  40       mime_type_(mime_type),
  41       get_notify_data_(0),
  42       use_mozilla_user_agent_(false),
  43 #if defined (OS_MACOSX)
  44 #ifdef NP_NO_QUICKDRAW
  45       drawing_model_(NPDrawingModelCoreGraphics),
  46 #else
  47       drawing_model_(NPDrawingModelQuickDraw),
  48 #endif
  49 #ifdef NP_NO_CARBON
  50       event_model_(NPEventModelCocoa),
  51 #else
  52       event_model_(NPEventModelCarbon),
  53 #endif
  54       currently_handled_event_(NULL),
  55 #endif
  56       message_loop_(base::MessageLoop::current()),
  57       load_manually_(false),
  58       in_close_streams_(false),
  59       next_timer_id_(1),
  60       next_notify_id_(0),
  61       next_range_request_id_(0),
  62       handles_url_redirects_(false) {
  63   npp_ = new NPP_t();
  64   npp_->ndata = 0;
  65   npp_->pdata = 0;
  66
  67   if (mime_type_ == kFlashPluginSwfMimeType)
  68     transparent_ = false;
  69
  70   memset(&zero_padding_, 0, sizeof(zero_padding_));
  71   DCHECK(message_loop_);
  72 }
  73
  74 PluginInstance::~PluginInstance() {
  75   CloseStreams();
  76
  77   if (npp_ != 0) {
  78     delete npp_;
  79     npp_ = 0;
  80   }
  81
  82   if (plugin_.get())
  83     plugin_->CloseInstance();
  84 }
  85
  86 PluginStreamUrl* PluginInstance::CreateStream(unsigned long resource_id,
  87                                               const GURL& url,
  88                                               const std::string& mime_type,
  89                                               int notify_id) {
  90
  91   bool notify;
  92   void* notify_data;
  93   GetNotifyData(notify_id, &notify, &notify_data);
  94   PluginStreamUrl* stream = new PluginStreamUrl(
  95       resource_id, url, this, notify, notify_data);
  96
  97   AddStream(stream);
  98   return stream;
  99 }
 100
 101 void PluginInstance::AddStream(PluginStream* stream) {
 102   open_streams_.push_back(make_scoped_refptr(stream));
 103 }
 104
 105 void PluginInstance::RemoveStream(PluginStream* stream) {
 106   if (in_close_streams_)
 107     return;
 108
 109   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
 110   for (stream_index = open_streams_.begin();
 111        stream_index != open_streams_.end(); ++stream_index) {
 112     if (stream_index->get() == stream) {
 113       open_streams_.erase(stream_index);
 114       break;
 115     }
 116   }
 117 }
 118
 119 bool PluginInstance::IsValidStream(const NPStream* stream) {
 120   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
 121   for (stream_index = open_streams_.begin();
 122           stream_index != open_streams_.end(); ++stream_index) {
 123     if ((*stream_index)->stream() == stream)
 124       return true;
 125   }
 126
 127   return false;
 128 }
 129
 130 void PluginInstance::CloseStreams() {
 131   in_close_streams_ = true;
 132   for (unsigned int index = 0; index < open_streams_.size(); ++index) {
 133     // Close all streams on the way down.
 134     open_streams_[index]->Close(NPRES_USER_BREAK);
 135   }
 136   open_streams_.clear();
 137   in_close_streams_ = false;
 138 }
 139
 140 WebPluginResourceClient* PluginInstance::GetRangeRequest(
 141     int id) {
 142   PendingRangeRequestMap::iterator iter = pending_range_requests_.find(id);
 143   if (iter == pending_range_requests_.end()) {
 144     NOTREACHED();
 145     return NULL;
 146   }
 147
 148   WebPluginResourceClient* rv = iter->second->AsResourceClient();
 149   pending_range_requests_.erase(iter);
 150   return rv;
 151 }
 152
 153 bool PluginInstance::Start(const GURL& url,
 154                            char** const param_names,
 155                            char** const param_values,
 156                            int param_count,
 157                            bool load_manually) {
 158   load_manually_ = load_manually;
 159   unsigned short mode = load_manually_ ? NP_FULL : NP_EMBED;
 160   npp_->ndata = this;
 161
 162   NPError err = NPP_New(mode, param_count,
 163       const_cast<char **>(param_names), const_cast<char **>(param_values));
 164
 165   if (err == NPERR_NO_ERROR) {
 166     handles_url_redirects_ =
 167         ((npp_functions_->version >= NPVERS_HAS_URL_REDIRECT_HANDLING) &&
 168          (npp_functions_->urlredirectnotify));
 169   }
 170   return err == NPERR_NO_ERROR;
 171 }
 172
 173 NPObject *PluginInstance::GetPluginScriptableObject() {
 174   NPObject *value = NULL;
 175   NPError error = NPP_GetValue(NPPVpluginScriptableNPObject, &value);
 176   if (error != NPERR_NO_ERROR || value == NULL)
 177     return NULL;
 178   return value;
 179 }
 180
 181 bool PluginInstance::GetFormValue(base::string16* value) {
 182   // Plugins will allocate memory for the return value by using NPN_MemAlloc().
 183   char *plugin_value = NULL;
 184   NPError error = NPP_GetValue(NPPVformValue, &plugin_value);
 185   if (error != NPERR_NO_ERROR || !plugin_value) {
 186     return false;
 187   }
 188   // Assumes the result is UTF8 text, as Firefox does.
 189   *value = base::UTF8ToUTF16(plugin_value);
 190   host_->host_functions()->memfree(plugin_value);
 191   return true;
 192 }
 193
 194 // WebPluginLoadDelegate methods
 195 void PluginInstance::DidFinishLoadWithReason(const GURL& url,
 196                                              NPReason reason,
 197                                              int notify_id) {
 198   bool notify;
 199   void* notify_data;
 200   GetNotifyData(notify_id, &notify, &notify_data);
 201   if (!notify) {
 202     NOTREACHED();
 203     return;
 204   }
 205
 206   NPP_URLNotify(url.spec().c_str(), reason, notify_data);
 207 }
 208
 209 unsigned PluginInstance::GetBackingTextureId() {
 210   // By default the plugin instance is not backed by an OpenGL texture.
 211   return 0;
 212 }
 213
 214 // NPAPI methods
 215 NPError PluginInstance::NPP_New(unsigned short mode,
 216                                 short argc,
 217                                 char* argn[],
 218                                 char* argv[]) {
 219   DCHECK(npp_functions_ != 0);
 220   DCHECK(npp_functions_->newp != 0);
 221   DCHECK(argc >= 0);
 222
 223   if (npp_functions_->newp != 0) {
 224     return npp_functions_->newp(
 225         (NPMIMEType)mime_type_.c_str(), npp_, mode,  argc, argn, argv, NULL);
 226   }
 227   return NPERR_INVALID_FUNCTABLE_ERROR;
 228 }
 229
 230 void PluginInstance::NPP_Destroy() {
 231   DCHECK(npp_functions_ != 0);
 232   DCHECK(npp_functions_->destroy != 0);
 233
 234   if (npp_functions_->destroy != 0) {
 235     NPSavedData *savedData = 0;
 236     npp_functions_->destroy(npp_, &savedData);
 237
 238     // TODO: Support savedData.  Technically, these need to be
 239     //       saved on a per-URL basis, and then only passed
 240     //       to new instances of the plugin at the same URL.
 241     //       Sounds like a huge security risk.  When we do support
 242     //       these, we should pass them back to the PluginLib
 243     //       to be stored there.
 244     DCHECK(savedData == 0);
 245   }
 246
 247   for (unsigned int file_index = 0; file_index < files_created_.size();
 248        file_index++) {
 249     base::DeleteFile(files_created_[file_index], false);
 250   }
 251
 252   // Ensure that no timer callbacks are invoked after NPP_Destroy.
 253   timers_.clear();
 254 }
 255
 256 NPError PluginInstance::NPP_SetWindow(NPWindow* window) {
 257   DCHECK(npp_functions_ != 0);
 258   DCHECK(npp_functions_->setwindow != 0);
 259
 260   if (npp_functions_->setwindow != 0) {
 261     return npp_functions_->setwindow(npp_, window);
 262   }
 263   return NPERR_INVALID_FUNCTABLE_ERROR;
 264 }
 265
 266 NPError PluginInstance::NPP_NewStream(NPMIMEType type,
 267                                       NPStream* stream,
 268                                       NPBool seekable,
 269                                       unsigned short* stype) {
 270   DCHECK(npp_functions_ != 0);
 271   DCHECK(npp_functions_->newstream != 0);
 272   if (npp_functions_->newstream != 0) {
 273       return npp_functions_->newstream(npp_, type, stream, seekable, stype);
 274   }
 275   return NPERR_INVALID_FUNCTABLE_ERROR;
 276 }
 277
 278 NPError PluginInstance::NPP_DestroyStream(NPStream* stream, NPReason reason) {
 279   DCHECK(npp_functions_ != 0);
 280   DCHECK(npp_functions_->destroystream != 0);
 281
 282   if (stream == NULL || !IsValidStream(stream) || (stream->ndata == NULL))
 283     return NPERR_INVALID_INSTANCE_ERROR;
 284
 285   if (npp_functions_->destroystream != 0) {
 286     NPError result = npp_functions_->destroystream(npp_, stream, reason);
 287     stream->ndata = NULL;
 288     return result;
 289   }
 290   return NPERR_INVALID_FUNCTABLE_ERROR;
 291 }
 292
 293 int PluginInstance::NPP_WriteReady(NPStream* stream) {
 294   DCHECK(npp_functions_ != 0);
 295   DCHECK(npp_functions_->writeready != 0);
 296   if (npp_functions_->writeready != 0) {
 297     return npp_functions_->writeready(npp_, stream);
 298   }
 299   return 0;
 300 }
 301
 302 int PluginInstance::NPP_Write(NPStream* stream,
 303                               int offset,
 304                               int len,
 305                               void* buffer) {
 306   DCHECK(npp_functions_ != 0);
 307   DCHECK(npp_functions_->write != 0);
 308   if (npp_functions_->write != 0) {
 309     return npp_functions_->write(npp_, stream, offset, len, buffer);
 310   }
 311   return 0;
 312 }
 313
 314 void PluginInstance::NPP_StreamAsFile(NPStream* stream, const char* fname) {
 315   DCHECK(npp_functions_ != 0);
 316   DCHECK(npp_functions_->asfile != 0);
 317   if (npp_functions_->asfile != 0) {
 318     npp_functions_->asfile(npp_, stream, fname);
 319   }
 320
 321   // Creating a temporary FilePath instance on the stack as the explicit
 322   // FilePath constructor with StringType as an argument causes a compiler
 323   // error when invoked via vector push back.
 324   base::FilePath file_name = base::FilePath::FromUTF8Unsafe(fname);
 325   files_created_.push_back(file_name);
 326 }
 327
 328 void PluginInstance::NPP_URLNotify(const char* url,
 329                                    NPReason reason,
 330                                    void* notifyData) {
 331   DCHECK(npp_functions_ != 0);
 332   DCHECK(npp_functions_->urlnotify != 0);
 333   if (npp_functions_->urlnotify != 0) {
 334     npp_functions_->urlnotify(npp_, url, reason, notifyData);
 335   }
 336 }
 337
 338 NPError PluginInstance::NPP_GetValue(NPPVariable variable, void* value) {
 339   DCHECK(npp_functions_ != 0);
 340   // getvalue is NULL for Shockwave
 341   if (npp_functions_->getvalue != 0) {
 342     return npp_functions_->getvalue(npp_, variable, value);
 343   }
 344   return NPERR_INVALID_FUNCTABLE_ERROR;
 345 }
 346
 347 NPError PluginInstance::NPP_SetValue(NPNVariable variable, void* value) {
 348   DCHECK(npp_functions_ != 0);
 349   if (npp_functions_->setvalue != 0) {
 350     return npp_functions_->setvalue(npp_, variable, value);
 351   }
 352   return NPERR_INVALID_FUNCTABLE_ERROR;
 353 }
 354
 355 short PluginInstance::NPP_HandleEvent(void* event) {
 356   DCHECK(npp_functions_ != 0);
 357   DCHECK(npp_functions_->event != 0);
 358   if (npp_functions_->event != 0) {
 359     return npp_functions_->event(npp_, (void*)event);
 360   }
 361   return false;
 362 }
 363
 364 bool PluginInstance::NPP_Print(NPPrint* platform_print) {
 365   DCHECK(npp_functions_ != 0);
 366   if (npp_functions_->print != 0) {
 367     npp_functions_->print(npp_, platform_print);
 368     return true;
 369   }
 370   return false;
 371 }
 372
 373 void PluginInstance::NPP_URLRedirectNotify(const char* url, int32_t status,
 374                                            void* notify_data) {
 375   DCHECK(npp_functions_ != 0);
 376   if (npp_functions_->urlredirectnotify != 0) {
 377     npp_functions_->urlredirectnotify(npp_, url, status, notify_data);
 378   }
 379 }
 380
 381 void PluginInstance::SendJavaScriptStream(const GURL& url,
 382                                           const std::string& result,
 383                                           bool success,
 384                                           int notify_id) {
 385   bool notify;
 386   void* notify_data;
 387   GetNotifyData(notify_id, &notify, &notify_data);
 388
 389   if (success) {
 390     PluginStringStream *stream =
 391         new PluginStringStream(this, url, notify, notify_data);
 392     AddStream(stream);
 393     stream->SendToPlugin(result, "text/html");
 394   } else {
 395     // NOTE: Sending an empty stream here will crash MacroMedia
 396     // Flash 9.  Just send the URL Notify.
 397     if (notify)
 398       NPP_URLNotify(url.spec().c_str(), NPRES_DONE, notify_data);
 399   }
 400 }
 401
 402 void PluginInstance::DidReceiveManualResponse(const GURL& url,
 403                                               const std::string& mime_type,
 404                                               const std::string& headers,
 405                                               uint32 expected_length,
 406                                               uint32 last_modified) {
 407   DCHECK(load_manually_);
 408
 409   plugin_data_stream_ = CreateStream(-1, url, mime_type, 0);
 410   plugin_data_stream_->DidReceiveResponse(mime_type, headers, expected_length,
 411                                           last_modified, true);
 412 }
 413
 414 void PluginInstance::DidReceiveManualData(const char* buffer, int length) {
 415   DCHECK(load_manually_);
 416   if (plugin_data_stream_.get() != NULL) {
 417     plugin_data_stream_->DidReceiveData(buffer, length, 0);
 418   }
 419 }
 420
 421 void PluginInstance::DidFinishManualLoading() {
 422   DCHECK(load_manually_);
 423   if (plugin_data_stream_.get() != NULL) {
 424     plugin_data_stream_->DidFinishLoading(plugin_data_stream_->ResourceId());
 425     plugin_data_stream_->Close(NPRES_DONE);
 426     plugin_data_stream_ = NULL;
 427   }
 428 }
 429
 430 void PluginInstance::DidManualLoadFail() {
 431   DCHECK(load_manually_);
 432   if (plugin_data_stream_.get() != NULL) {
 433     plugin_data_stream_->DidFail(plugin_data_stream_->ResourceId());
 434     plugin_data_stream_ = NULL;
 435   }
 436 }
 437
 438 void PluginInstance::PluginThreadAsyncCall(void (*func)(void*),
 439                                            void* user_data) {
 440   message_loop_->PostTask(
 441       FROM_HERE, base::Bind(&PluginInstance::OnPluginThreadAsyncCall, this,
 442                             func, user_data));
 443 }
 444
 445 void PluginInstance::OnPluginThreadAsyncCall(void (*func)(void*),
 446                                              void* user_data) {
 447   // Do not invoke the callback if NPP_Destroy has already been invoked.
 448   if (webplugin_)
 449     func(user_data);
 450 }
 451
 452 uint32 PluginInstance::ScheduleTimer(uint32 interval,
 453                                      NPBool repeat,
 454                                      void (*func)(NPP id, uint32 timer_id)) {
 455   // Use next timer id.
 456   uint32 timer_id;
 457   timer_id = next_timer_id_;
 458   ++next_timer_id_;
 459   DCHECK(next_timer_id_ != 0);
 460
 461   // Record timer interval and repeat.
 462   TimerInfo info;
 463   info.interval = interval;
 464   info.repeat = repeat ? true : false;
 465   timers_[timer_id] = info;
 466
 467   // Schedule the callback.
 468   base::MessageLoop::current()->PostDelayedTask(
 469       FROM_HERE,
 470       base::Bind(&PluginInstance::OnTimerCall, this, func, npp_, timer_id),
 471       base::TimeDelta::FromMilliseconds(interval));
 472   return timer_id;
 473 }
 474
 475 void PluginInstance::UnscheduleTimer(uint32 timer_id) {
 476   // Remove info about the timer.
 477   TimerMap::iterator it = timers_.find(timer_id);
 478   if (it != timers_.end())
 479     timers_.erase(it);
 480 }
 481
 482 #if !defined(OS_MACOSX)
 483 NPError PluginInstance::PopUpContextMenu(NPMenu* menu) {
 484   NOTIMPLEMENTED();
 485   return NPERR_GENERIC_ERROR;
 486 }
 487 #endif
 488
 489 void PluginInstance::OnTimerCall(void (*func)(NPP id, uint32 timer_id),
 490                                  NPP id,
 491                                  uint32 timer_id) {
 492   // Do not invoke callback if the timer has been unscheduled.
 493   TimerMap::iterator it = timers_.find(timer_id);
 494   if (it == timers_.end())
 495     return;
 496
 497   // Get all information about the timer before invoking the callback. The
 498   // callback might unschedule the timer.
 499   TimerInfo info = it->second;
 500
 501   func(id, timer_id);
 502
 503   // If the timer was unscheduled by the callback, just free up the timer id.
 504   if (timers_.find(timer_id) == timers_.end())
 505     return;
 506
 507   // Reschedule repeating timers after invoking the callback so callback is not
 508   // re-entered if it pumps the message loop.
 509   if (info.repeat) {
 510     base::MessageLoop::current()->PostDelayedTask(
 511         FROM_HERE,
 512         base::Bind(&PluginInstance::OnTimerCall, this, func, npp_, timer_id),
 513         base::TimeDelta::FromMilliseconds(info.interval));
 514   } else {
 515     timers_.erase(it);
 516   }
 517 }
 518
 519 void PluginInstance::PushPopupsEnabledState(bool enabled) {
 520   popups_enabled_stack_.push(enabled);
 521 }
 522
 523 void PluginInstance::PopPopupsEnabledState() {
 524   popups_enabled_stack_.pop();
 525 }
 526
 527 void PluginInstance::RequestRead(NPStream* stream, NPByteRange* range_list) {
 528   std::string range_info = "bytes=";
 529
 530   while (range_list) {
 531     range_info += base::IntToString(range_list->offset);
 532     range_info.push_back('-');
 533     range_info +=
 534         base::IntToString(range_list->offset + range_list->length - 1);
 535     range_list = range_list->next;
 536     if (range_list)
 537       range_info.push_back(',');
 538   }
 539
 540   if (plugin_data_stream_.get()) {
 541     if (plugin_data_stream_->stream() == stream) {
 542       webplugin_->CancelDocumentLoad();
 543       plugin_data_stream_ = NULL;
 544     }
 545   }
 546
 547   // The lifetime of a NPStream instance depends on the PluginStream instance
 548   // which owns it. When a plugin invokes NPN_RequestRead on a seekable stream,
 549   // we don't want to create a new stream when the corresponding response is
 550   // received. We send over a cookie which represents the PluginStream
 551   // instance which is sent back from the renderer when the response is
 552   // received.
 553   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
 554   for (stream_index = open_streams_.begin();
 555           stream_index != open_streams_.end(); ++stream_index) {
 556     PluginStream* plugin_stream = stream_index->get();
 557     if (plugin_stream->stream() == stream) {
 558       // A stream becomes seekable the first time NPN_RequestRead
 559       // is called on it.
 560       plugin_stream->set_seekable(true);
 561
 562       if (CommandLine::ForCurrentProcess()->HasSwitch(
 563               switches::kDisableDirectNPAPIRequests)) {
 564         pending_range_requests_[++next_range_request_id_] = plugin_stream;
 565         webplugin_->InitiateHTTPRangeRequest(
 566             stream->url, range_info.c_str(), next_range_request_id_);
 567         return;
 568       } else {
 569         PluginStreamUrl* plugin_stream_url =
 570             static_cast<PluginStreamUrl*>(plugin_stream);
 571         plugin_stream_url->FetchRange(range_info);
 572         return;
 573       }
 574     }
 575   }
 576   NOTREACHED();
 577 }
 578
 579 void PluginInstance::RequestURL(const char* url,
 580                                 const char* method,
 581                                 const char* target,
 582                                 const char* buf,
 583                                 unsigned int len,
 584                                 bool notify,
 585                                 void* notify_data) {
 586   int notify_id = 0;
 587   if (notify) {
 588     notify_id = ++next_notify_id_;
 589     pending_requests_[notify_id] = notify_data;
 590   }
 591
 592   webplugin_->HandleURLRequest(
 593       url, method, target, buf, len, notify_id, popups_allowed(),
 594       notify ? handles_url_redirects_ : false);
 595 }
 596
 597 bool PluginInstance::ConvertPoint(double source_x, double source_y,
 598                                   NPCoordinateSpace source_space,
 599                                   double* dest_x, double* dest_y,
 600                                   NPCoordinateSpace dest_space) {
 601 #if defined(OS_MACOSX)
 602   CGRect main_display_bounds = CGDisplayBounds(CGMainDisplayID());
 603
 604   double flipped_screen_x = source_x;
 605   double flipped_screen_y = source_y;
 606   switch(source_space) {
 607     case NPCoordinateSpacePlugin:
 608       flipped_screen_x += plugin_origin_.x();
 609       flipped_screen_y += plugin_origin_.y();
 610       break;
 611     case NPCoordinateSpaceWindow:
 612       flipped_screen_x += containing_window_frame_.x();
 613       flipped_screen_y = containing_window_frame_.height() - source_y +
 614           containing_window_frame_.y();
 615       break;
 616     case NPCoordinateSpaceFlippedWindow:
 617       flipped_screen_x += containing_window_frame_.x();
 618       flipped_screen_y += containing_window_frame_.y();
 619       break;
 620     case NPCoordinateSpaceScreen:
 621       flipped_screen_y = main_display_bounds.size.height - flipped_screen_y;
 622       break;
 623     case NPCoordinateSpaceFlippedScreen:
 624       break;
 625     default:
 626       NOTREACHED();
 627       return false;
 628   }
 629
 630   double target_x = flipped_screen_x;
 631   double target_y = flipped_screen_y;
 632   switch(dest_space) {
 633     case NPCoordinateSpacePlugin:
 634       target_x -= plugin_origin_.x();
 635       target_y -= plugin_origin_.y();
 636       break;
 637     case NPCoordinateSpaceWindow:
 638       target_x -= containing_window_frame_.x();
 639       target_y -= containing_window_frame_.y();
 640       target_y = containing_window_frame_.height() - target_y;
 641       break;
 642     case NPCoordinateSpaceFlippedWindow:
 643       target_x -= containing_window_frame_.x();
 644       target_y -= containing_window_frame_.y();
 645       break;
 646     case NPCoordinateSpaceScreen:
 647       target_y = main_display_bounds.size.height - flipped_screen_y;
 648       break;
 649     case NPCoordinateSpaceFlippedScreen:
 650       break;
 651     default:
 652       NOTREACHED();
 653       return false;
 654   }
 655
 656   if (dest_x)
 657     *dest_x = target_x;
 658   if (dest_y)
 659     *dest_y = target_y;
 660   return true;
 661 #else
 662   NOTIMPLEMENTED();
 663   return false;
 664 #endif
 665 }
 666
 667 void PluginInstance::GetNotifyData(int notify_id,
 668                                    bool* notify,
 669                                    void** notify_data) {
 670   PendingRequestMap::iterator iter = pending_requests_.find(notify_id);
 671   if (iter != pending_requests_.end()) {
 672     *notify = true;
 673     *notify_data = iter->second;
 674     pending_requests_.erase(iter);
 675   } else {
 676     *notify = false;
 677     *notify_data = NULL;
 678   }
 679 }
 680
 681 void PluginInstance::URLRedirectResponse(bool allow, void* notify_data) {
 682   // The notify_data passed in allows us to identify the matching stream.
 683   std::vector<scoped_refptr<PluginStream> >::iterator stream_index;
 684   for (stream_index = open_streams_.begin();
 685           stream_index != open_streams_.end(); ++stream_index) {
 686     PluginStream* plugin_stream = stream_index->get();
 687     if (plugin_stream->notify_data() == notify_data) {
 688       PluginStreamUrl* plugin_stream_url =
 689           static_cast<PluginStreamUrl*>(plugin_stream);
 690       plugin_stream_url->URLRedirectResponse(allow);
 691       break;
 692     }
 693   }
 694 }
 695
 696 }  // namespace content