ppapi/proxy/interface_list.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/interface_list.h"
   6
   7 #include "base/hash.h"
   8 #include "base/lazy_instance.h"
   9 #include "base/memory/singleton.h"
  10 #include "ppapi/c/dev/ppb_audio_input_dev.h"
  11 #include "ppapi/c/dev/ppb_buffer_dev.h"
  12 #include "ppapi/c/dev/ppb_char_set_dev.h"
  13 #include "ppapi/c/dev/ppb_crypto_dev.h"
  14 #include "ppapi/c/dev/ppb_cursor_control_dev.h"
  15 #include "ppapi/c/dev/ppb_device_ref_dev.h"
  16 #include "ppapi/c/dev/ppb_font_dev.h"
  17 #include "ppapi/c/dev/ppb_gles_chromium_texture_mapping_dev.h"
  18 #include "ppapi/c/dev/ppb_ime_input_event_dev.h"
  19 #include "ppapi/c/dev/ppb_memory_dev.h"
  20 #include "ppapi/c/dev/ppb_opengles2ext_dev.h"
  21 #include "ppapi/c/dev/ppb_printing_dev.h"
  22 #include "ppapi/c/dev/ppb_text_input_dev.h"
  23 #include "ppapi/c/dev/ppb_trace_event_dev.h"
  24 #include "ppapi/c/dev/ppb_truetype_font_dev.h"
  25 #include "ppapi/c/dev/ppb_url_util_dev.h"
  26 #include "ppapi/c/dev/ppb_var_deprecated.h"
  27 #include "ppapi/c/dev/ppb_video_capture_dev.h"
  28 #include "ppapi/c/dev/ppb_view_dev.h"
  29 #include "ppapi/c/ppb_audio.h"
  30 #include "ppapi/c/ppb_audio_buffer.h"
  31 #include "ppapi/c/ppb_audio_config.h"
  32 #include "ppapi/c/ppb_compositor.h"
  33 #include "ppapi/c/ppb_compositor_layer.h"
  34 #include "ppapi/c/ppb_console.h"
  35 #include "ppapi/c/ppb_core.h"
  36 #include "ppapi/c/ppb_file_io.h"
  37 #include "ppapi/c/ppb_file_ref.h"
  38 #include "ppapi/c/ppb_file_system.h"
  39 #include "ppapi/c/ppb_fullscreen.h"
  40 #include "ppapi/c/ppb_graphics_2d.h"
  41 #include "ppapi/c/ppb_host_resolver.h"
  42 #include "ppapi/c/ppb_image_data.h"
  43 #include "ppapi/c/ppb_input_event.h"
  44 #include "ppapi/c/ppb_instance.h"
  45 #include "ppapi/c/ppb_media_stream_audio_track.h"
  46 #include "ppapi/c/ppb_media_stream_video_track.h"
  47 #include "ppapi/c/ppb_message_loop.h"
  48 #include "ppapi/c/ppb_messaging.h"
  49 #include "ppapi/c/ppb_mouse_lock.h"
  50 #include "ppapi/c/ppb_net_address.h"
  51 #include "ppapi/c/ppb_network_list.h"
  52 #include "ppapi/c/ppb_network_monitor.h"
  53 #include "ppapi/c/ppb_network_proxy.h"
  54 #include "ppapi/c/ppb_opengles2.h"
  55 #include "ppapi/c/ppb_tcp_socket.h"
  56 #include "ppapi/c/ppb_text_input_controller.h"
  57 #include "ppapi/c/ppb_udp_socket.h"
  58 #include "ppapi/c/ppb_url_loader.h"
  59 #include "ppapi/c/ppb_url_request_info.h"
  60 #include "ppapi/c/ppb_url_response_info.h"
  61 #include "ppapi/c/ppb_var.h"
  62 #include "ppapi/c/ppb_var_array.h"
  63 #include "ppapi/c/ppb_var_array_buffer.h"
  64 #include "ppapi/c/ppb_var_dictionary.h"
  65 #include "ppapi/c/ppb_video_decoder.h"
  66 #include "ppapi/c/ppb_video_encoder.h"
  67 #include "ppapi/c/ppb_video_frame.h"
  68 #include "ppapi/c/ppb_view.h"
  69 #include "ppapi/c/pp_errors.h"
  70 #include "ppapi/c/ppp_instance.h"
  71 #include "ppapi/c/private/ppb_camera_capabilities_private.h"
  72 #include "ppapi/c/private/ppb_camera_device_private.h"
  73 #include "ppapi/c/private/ppb_content_decryptor_private.h"
  74 #include "ppapi/c/private/ppb_ext_crx_file_system_private.h"
  75 #include "ppapi/c/private/ppb_file_io_private.h"
  76 #include "ppapi/c/private/ppb_file_ref_private.h"
  77 #include "ppapi/c/private/ppb_find_private.h"
  78 #include "ppapi/c/private/ppb_flash_clipboard.h"
  79 #include "ppapi/c/private/ppb_flash_file.h"
  80 #include "ppapi/c/private/ppb_flash_font_file.h"
  81 #include "ppapi/c/private/ppb_flash_fullscreen.h"
  82 #include "ppapi/c/private/ppb_flash.h"
  83 #include "ppapi/c/private/ppb_flash_device_id.h"
  84 #include "ppapi/c/private/ppb_flash_drm.h"
  85 #include "ppapi/c/private/ppb_flash_menu.h"
  86 #include "ppapi/c/private/ppb_flash_message_loop.h"
  87 #include "ppapi/c/private/ppb_flash_print.h"
  88 #include "ppapi/c/private/ppb_host_resolver_private.h"
  89 #include "ppapi/c/private/ppb_isolated_file_system_private.h"
  90 #include "ppapi/c/private/ppb_net_address_private.h"
  91 #include "ppapi/c/private/ppb_output_protection_private.h"
  92 #include "ppapi/c/private/ppb_pdf.h"
  93 #include "ppapi/c/private/ppb_platform_verification_private.h"
  94 #include "ppapi/c/private/ppb_tcp_server_socket_private.h"
  95 #include "ppapi/c/private/ppb_tcp_socket_private.h"
  96 #include "ppapi/c/private/ppb_testing_private.h"
  97 #include "ppapi/c/private/ppb_udp_socket_private.h"
  98 #include "ppapi/c/private/ppb_uma_private.h"
  99 #include "ppapi/c/private/ppb_video_destination_private.h"
 100 #include "ppapi/c/private/ppb_video_source_private.h"
 101 #include "ppapi/c/private/ppb_x509_certificate_private.h"
 102 #include "ppapi/c/private/ppp_content_decryptor_private.h"
 103 #include "ppapi/c/trusted/ppb_broker_trusted.h"
 104 #include "ppapi/c/trusted/ppb_browser_font_trusted.h"
 105 #include "ppapi/c/trusted/ppb_char_set_trusted.h"
 106 #include "ppapi/c/trusted/ppb_file_chooser_trusted.h"
 107 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
 108 #include "ppapi/proxy/interface_proxy.h"
 109 #include "ppapi/proxy/plugin_globals.h"
 110 #include "ppapi/proxy/ppapi_messages.h"
 111 #include "ppapi/proxy/ppb_audio_proxy.h"
 112 #include "ppapi/proxy/ppb_broker_proxy.h"
 113 #include "ppapi/proxy/ppb_buffer_proxy.h"
 114 #include "ppapi/proxy/ppb_core_proxy.h"
 115 #include "ppapi/proxy/ppb_flash_message_loop_proxy.h"
 116 #include "ppapi/proxy/ppb_graphics_3d_proxy.h"
 117 #include "ppapi/proxy/ppb_image_data_proxy.h"
 118 #include "ppapi/proxy/ppb_instance_proxy.h"
 119 #include "ppapi/proxy/ppb_message_loop_proxy.h"
 120 #include "ppapi/proxy/ppb_testing_proxy.h"
 121 #include "ppapi/proxy/ppb_var_deprecated_proxy.h"
 122 #include "ppapi/proxy/ppb_video_decoder_proxy.h"
 123 #include "ppapi/proxy/ppb_x509_certificate_private_proxy.h"
 124 #include "ppapi/proxy/ppp_class_proxy.h"
 125 #include "ppapi/proxy/ppp_content_decryptor_private_proxy.h"
 126 #include "ppapi/proxy/ppp_find_proxy.h"
 127 #include "ppapi/proxy/ppp_graphics_3d_proxy.h"
 128 #include "ppapi/proxy/ppp_input_event_proxy.h"
 129 #include "ppapi/proxy/ppp_instance_private_proxy.h"
 130 #include "ppapi/proxy/ppp_instance_proxy.h"
 131 #include "ppapi/proxy/ppp_messaging_proxy.h"
 132 #include "ppapi/proxy/ppp_mouse_lock_proxy.h"
 133 #include "ppapi/proxy/ppp_pdf_proxy.h"
 134 #include "ppapi/proxy/ppp_printing_proxy.h"
 135 #include "ppapi/proxy/ppp_text_input_proxy.h"
 136 #include "ppapi/proxy/ppp_video_decoder_proxy.h"
 137 #include "ppapi/proxy/resource_creation_proxy.h"
 138 #include "ppapi/shared_impl/ppb_opengles2_shared.h"
 139 #include "ppapi/shared_impl/ppb_var_shared.h"
 140 #include "ppapi/thunk/thunk.h"
 141
 142 // Helper to get the proxy name PPB_Foo_Proxy given the API name PPB_Foo.
 143 #define PROXY_CLASS_NAME(api_name) api_name##_Proxy
 144
 145 // Helper to get the interface ID PPB_Foo_Proxy::kApiID given the API
 146 // name PPB_Foo.
 147 #define PROXY_API_ID(api_name) PROXY_CLASS_NAME(api_name)::kApiID
 148
 149 // Helper to get the name of the templatized factory function.
 150 #define PROXY_FACTORY_NAME(api_name) ProxyFactory<PROXY_CLASS_NAME(api_name)>
 151
 152 // Helper to get the name of the thunk GetPPB_Foo_1_0_Thunk given the interface
 153 // struct name PPB_Foo_1_0.
 154 #define INTERFACE_THUNK_NAME(iface_struct) thunk::Get##iface_struct##_Thunk
 155
 156 namespace ppapi {
 157 namespace proxy {
 158
 159 namespace {
 160
 161 template<typename ProxyClass>
 162 InterfaceProxy* ProxyFactory(Dispatcher* dispatcher) {
 163   return new ProxyClass(dispatcher);
 164 }
 165
 166 base::LazyInstance<PpapiPermissions> g_process_global_permissions;
 167
 168 }  // namespace
 169
 170 InterfaceList::InterfaceList() {
 171   memset(id_to_factory_, 0, sizeof(id_to_factory_));
 172
 173   // Register the API factories for each of the API types. This calls AddProxy
 174   // for each InterfaceProxy type we support.
 175   #define PROXIED_API(api_name) \
 176       AddProxy(PROXY_API_ID(api_name), &PROXY_FACTORY_NAME(api_name));
 177
 178   // Register each proxied interface by calling AddPPB for each supported
 179   // interface. Set current_required_permission to the appropriate value for
 180   // the value you want expanded by this macro.
 181   #define PROXIED_IFACE(iface_str, iface_struct) \
 182       AddPPB(iface_str, \
 183              INTERFACE_THUNK_NAME(iface_struct)(), \
 184              current_required_permission);
 185
 186   {
 187     Permission current_required_permission = PERMISSION_NONE;
 188     #include "ppapi/thunk/interfaces_ppb_private_no_permissions.h"
 189     #include "ppapi/thunk/interfaces_ppb_public_stable.h"
 190   }
 191   {
 192     Permission current_required_permission = PERMISSION_DEV;
 193     #include "ppapi/thunk/interfaces_ppb_public_dev.h"
 194   }
 195   {
 196     Permission current_required_permission = PERMISSION_PRIVATE;
 197     #include "ppapi/thunk/interfaces_ppb_private.h"
 198   }
 199   {
 200 #if !defined(OS_NACL)
 201     Permission current_required_permission = PERMISSION_FLASH;
 202     #include "ppapi/thunk/interfaces_ppb_private_flash.h"
 203 #endif  // !defined(OS_NACL)
 204   }
 205   {
 206     Permission current_required_permission = PERMISSION_DEV_CHANNEL;
 207     #include "ppapi/thunk/interfaces_ppb_public_dev_channel.h"
 208   }
 209
 210   #undef PROXIED_API
 211   #undef PROXIED_IFACE
 212
 213   // Manually add some special proxies. Some of these don't have interfaces
 214   // that they support, so aren't covered by the macros above, but have proxies
 215   // for message routing. Others have different implementations between the
 216   // proxy and the impl and there's no obvious message routing.
 217   AddProxy(API_ID_RESOURCE_CREATION, &ResourceCreationProxy::Create);
 218   AddProxy(API_ID_PPP_CLASS, &PPP_Class_Proxy::Create);
 219   AddPPB(PPB_CORE_INTERFACE_1_0,
 220          PPB_Core_Proxy::GetPPB_Core_Interface(), PERMISSION_NONE);
 221   AddPPB(PPB_MESSAGELOOP_INTERFACE_1_0,
 222          PPB_MessageLoop_Proxy::GetInterface(), PERMISSION_NONE);
 223   AddPPB(PPB_OPENGLES2_INTERFACE_1_0,
 224          PPB_OpenGLES2_Shared::GetInterface(), PERMISSION_NONE);
 225   AddPPB(PPB_OPENGLES2_INSTANCEDARRAYS_INTERFACE_1_0,
 226          PPB_OpenGLES2_Shared::GetInstancedArraysInterface(), PERMISSION_NONE);
 227   AddPPB(PPB_OPENGLES2_FRAMEBUFFERBLIT_INTERFACE_1_0,
 228          PPB_OpenGLES2_Shared::GetFramebufferBlitInterface(), PERMISSION_NONE);
 229   AddPPB(PPB_OPENGLES2_FRAMEBUFFERMULTISAMPLE_INTERFACE_1_0,
 230          PPB_OpenGLES2_Shared::GetFramebufferMultisampleInterface(),
 231          PERMISSION_NONE);
 232   AddPPB(PPB_OPENGLES2_CHROMIUMENABLEFEATURE_INTERFACE_1_0,
 233          PPB_OpenGLES2_Shared::GetChromiumEnableFeatureInterface(),
 234          PERMISSION_NONE);
 235   AddPPB(PPB_OPENGLES2_CHROMIUMMAPSUB_INTERFACE_1_0,
 236          PPB_OpenGLES2_Shared::GetChromiumMapSubInterface(), PERMISSION_NONE);
 237   AddPPB(PPB_OPENGLES2_CHROMIUMMAPSUB_DEV_INTERFACE_1_0,
 238          PPB_OpenGLES2_Shared::GetChromiumMapSubInterface(), PERMISSION_NONE);
 239   AddPPB(PPB_OPENGLES2_QUERY_INTERFACE_1_0,
 240          PPB_OpenGLES2_Shared::GetQueryInterface(), PERMISSION_NONE);
 241   AddPPB(PPB_OPENGLES2_VERTEXARRAYOBJECT_INTERFACE_1_0,
 242          PPB_OpenGLES2_Shared::GetVertexArrayObjectInterface(),
 243          PERMISSION_NONE);
 244   AddPPB(PPB_OPENGLES2_DRAWBUFFERS_DEV_INTERFACE_1_0,
 245          PPB_OpenGLES2_Shared::GetDrawBuffersInterface(),
 246          PERMISSION_DEV);
 247   AddPPB(PPB_VAR_ARRAY_BUFFER_INTERFACE_1_0,
 248          PPB_Var_Shared::GetVarArrayBufferInterface1_0(),
 249          PERMISSION_NONE);
 250   AddPPB(PPB_VAR_INTERFACE_1_2,
 251          PPB_Var_Shared::GetVarInterface1_2(), PERMISSION_NONE);
 252   AddPPB(PPB_VAR_INTERFACE_1_1,
 253          PPB_Var_Shared::GetVarInterface1_1(), PERMISSION_NONE);
 254   AddPPB(PPB_VAR_INTERFACE_1_0,
 255          PPB_Var_Shared::GetVarInterface1_0(), PERMISSION_NONE);
 256
 257 #if !defined(OS_NACL)
 258   // PPB (browser) interfaces.
 259   // Do not add more stuff here, they should be added to interface_list*.h
 260   // TODO(brettw) remove these.
 261   AddProxy(API_ID_PPB_INSTANCE_PRIVATE, &ProxyFactory<PPB_Instance_Proxy>);
 262   AddPPB(PPB_INSTANCE_PRIVATE_INTERFACE_0_1,
 263          thunk::GetPPB_Instance_Private_0_1_Thunk(),
 264          PERMISSION_PRIVATE);
 265
 266   AddProxy(API_ID_PPB_VAR_DEPRECATED, &ProxyFactory<PPB_Var_Deprecated_Proxy>);
 267   AddPPB(PPB_VAR_DEPRECATED_INTERFACE,
 268          PPB_Var_Deprecated_Proxy::GetProxyInterface(), PERMISSION_DEV);
 269
 270   // TODO(tomfinegan): Figure out where to put these once we refactor things
 271   // to load the PPP interface struct from the PPB interface.
 272   AddProxy(API_ID_PPP_CONTENT_DECRYPTOR_PRIVATE,
 273            &ProxyFactory<PPP_ContentDecryptor_Private_Proxy>);
 274   AddPPP(PPP_CONTENTDECRYPTOR_PRIVATE_INTERFACE,
 275          PPP_ContentDecryptor_Private_Proxy::GetProxyInterface());
 276 #endif
 277   AddProxy(API_ID_PPB_TESTING, &ProxyFactory<PPB_Testing_Proxy>);
 278   AddPPB(PPB_TESTING_PRIVATE_INTERFACE,
 279          PPB_Testing_Proxy::GetProxyInterface(), PERMISSION_TESTING);
 280
 281   // PPP (plugin) interfaces.
 282   // TODO(brettw) move these to interface_list*.h
 283   AddProxy(API_ID_PPP_GRAPHICS_3D, &ProxyFactory<PPP_Graphics3D_Proxy>);
 284   AddPPP(PPP_GRAPHICS_3D_INTERFACE, PPP_Graphics3D_Proxy::GetProxyInterface());
 285   AddProxy(API_ID_PPP_INPUT_EVENT, &ProxyFactory<PPP_InputEvent_Proxy>);
 286   AddPPP(PPP_INPUT_EVENT_INTERFACE, PPP_InputEvent_Proxy::GetProxyInterface());
 287   AddProxy(API_ID_PPP_INSTANCE, &ProxyFactory<PPP_Instance_Proxy>);
 288 #if !defined(OS_NACL)
 289   AddPPP(PPP_INSTANCE_INTERFACE_1_1,
 290          PPP_Instance_Proxy::GetInstanceInterface());
 291   AddProxy(API_ID_PPP_INSTANCE_PRIVATE,
 292            &ProxyFactory<PPP_Instance_Private_Proxy>);
 293   AddPPP(PPP_INSTANCE_PRIVATE_INTERFACE,
 294          PPP_Instance_Private_Proxy::GetProxyInterface());
 295 #endif
 296   AddProxy(API_ID_PPP_MESSAGING, &ProxyFactory<PPP_Messaging_Proxy>);
 297   AddProxy(API_ID_PPP_MOUSE_LOCK, &ProxyFactory<PPP_MouseLock_Proxy>);
 298   AddPPP(PPP_MOUSELOCK_INTERFACE, PPP_MouseLock_Proxy::GetProxyInterface());
 299   AddProxy(API_ID_PPP_PRINTING, &ProxyFactory<PPP_Printing_Proxy>);
 300   AddPPP(PPP_PRINTING_DEV_INTERFACE, PPP_Printing_Proxy::GetProxyInterface());
 301   AddProxy(API_ID_PPP_TEXT_INPUT, &ProxyFactory<PPP_TextInput_Proxy>);
 302   AddPPP(PPP_TEXTINPUT_DEV_INTERFACE, PPP_TextInput_Proxy::GetProxyInterface());
 303 #if !defined(OS_NACL)
 304   AddProxy(API_ID_PPP_PDF, &ProxyFactory<PPP_Pdf_Proxy>);
 305   AddPPP(PPP_PDF_INTERFACE, PPP_Pdf_Proxy::GetProxyInterface());
 306   AddProxy(API_ID_PPP_FIND_PRIVATE, &ProxyFactory<PPP_Find_Proxy>);
 307   AddPPP(PPP_FIND_PRIVATE_INTERFACE, PPP_Find_Proxy::GetProxyInterface());
 308   AddProxy(API_ID_PPP_VIDEO_DECODER_DEV, &ProxyFactory<PPP_VideoDecoder_Proxy>);
 309   AddPPP(PPP_VIDEODECODER_DEV_INTERFACE,
 310          PPP_VideoDecoder_Proxy::GetProxyInterface());
 311 #endif
 312 }
 313
 314 InterfaceList::~InterfaceList() {
 315 }
 316
 317 // static
 318 InterfaceList* InterfaceList::GetInstance() {
 319   // CAUTION: This function is called without the ProxyLock to avoid excessive
 320   // excessive locking from C++ wrappers. (See also GetBrowserInterface.)
 321   return Singleton<InterfaceList>::get();
 322 }
 323
 324 // static
 325 void InterfaceList::SetProcessGlobalPermissions(
 326     const PpapiPermissions& permissions) {
 327   g_process_global_permissions.Get() = permissions;
 328 }
 329
 330 InterfaceProxy::Factory InterfaceList::GetFactoryForID(ApiID id) const {
 331   int index = static_cast<int>(id);
 332   static_assert(API_ID_NONE == 0, "none must be zero");
 333   if (id <= 0 || id >= API_ID_COUNT)
 334     return NULL;
 335   return id_to_factory_[index];
 336 }
 337
 338 const void* InterfaceList::GetInterfaceForPPB(const std::string& name) {
 339   // CAUTION: This function is called without the ProxyLock to avoid excessive
 340   // excessive locking from C++ wrappers. (See also GetBrowserInterface.)
 341   NameToInterfaceInfoMap::iterator found =
 342       name_to_browser_info_.find(name);
 343   if (found == name_to_browser_info_.end())
 344     return NULL;
 345
 346   if (g_process_global_permissions.Get().HasPermission(
 347           found->second->required_permission())) {
 348     // Only log interface use once per plugin.
 349     found->second->LogWithUmaOnce(
 350         PluginGlobals::Get()->GetBrowserSender(), name);
 351     return found->second->iface();
 352   }
 353   return NULL;
 354 }
 355
 356 const void* InterfaceList::GetInterfaceForPPP(const std::string& name) const {
 357   NameToInterfaceInfoMap::const_iterator found =
 358       name_to_plugin_info_.find(name);
 359   if (found == name_to_plugin_info_.end())
 360     return NULL;
 361   return found->second->iface();
 362 }
 363
 364 void InterfaceList::InterfaceInfo::LogWithUmaOnce(
 365     IPC::Sender* sender, const std::string& name) {
 366   {
 367     base::AutoLock acquire(sent_to_uma_lock_);
 368     if (sent_to_uma_)
 369       return;
 370     sent_to_uma_ = true;
 371   }
 372   int hash = InterfaceList::HashInterfaceName(name);
 373   PluginGlobals::Get()->GetBrowserSender()->Send(
 374       new PpapiHostMsg_LogInterfaceUsage(hash));
 375 }
 376
 377 void InterfaceList::AddProxy(ApiID id,
 378                              InterfaceProxy::Factory factory) {
 379   // For interfaces with no corresponding _Proxy objects, the macros will
 380   // generate calls to this function with API_ID_NONE. This means we
 381   // should just skip adding a factory for these functions.
 382   if (id == API_ID_NONE)
 383     return;
 384
 385   // The factory should be an exact dupe of the one we already have if it
 386   // has already been registered before.
 387   int index = static_cast<int>(id);
 388   DCHECK(!id_to_factory_[index] || id_to_factory_[index] == factory);
 389
 390   id_to_factory_[index] = factory;
 391 }
 392
 393 void InterfaceList::AddPPB(const char* name,
 394                            const void* iface,
 395                            Permission perm) {
 396   DCHECK(name_to_browser_info_.find(name) == name_to_browser_info_.end());
 397   name_to_browser_info_.add(
 398       name, scoped_ptr<InterfaceInfo>(new InterfaceInfo(iface, perm)));
 399 }
 400
 401 void InterfaceList::AddPPP(const char* name,
 402                            const void* iface) {
 403   DCHECK(name_to_plugin_info_.find(name) == name_to_plugin_info_.end());
 404   name_to_plugin_info_.add(
 405       name,
 406       scoped_ptr<InterfaceInfo>(new InterfaceInfo(iface, PERMISSION_NONE)));
 407 }
 408
 409 int InterfaceList::HashInterfaceName(const std::string& name) {
 410   uint32 data = base::Hash(name.c_str(), name.size());
 411   // Strip off the signed bit because UMA doesn't support negative values,
 412   // but takes a signed int as input.
 413   return static_cast<int>(data & 0x7fffffff);
 414 }
 415
 416 }  // namespace proxy
 417 }  // namespace ppapi