create one video capture message filter per renderer process

content/renderer/render_thread.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_thread.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 26 matching lines @@
 #include "content/renderer/gpu/gpu_channel_host.h"
 #include "content/renderer/gpu/gpu_video_service_host.h"
 #include "content/renderer/indexed_db_dispatcher.h"
 #include "content/renderer/plugin_channel_host.h"
 #include "content/renderer/render_process_impl.h"
 #include "content/renderer/render_process_observer.h"
 #include "content/renderer/render_view.h"
 #include "content/renderer/render_view_visitor.h"
 #include "content/renderer/renderer_webidbfactory_impl.h"
 #include "content/renderer/renderer_webkitclient_impl.h"
+#include "content/renderer/video_capture_message_filter.h"
+#include "content/renderer/video_capture_message_filter_creator.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_platform_file.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_util.h"
 #include "third_party/tcmalloc/chromium/src/google/malloc_extension.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebColor.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDatabase.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
@@ skipping 103 matching lines @@
   hidden_widget_count_ = 0;
   idle_notification_delay_in_s_ = kInitialIdleHandlerDelayS;
   task_factory_.reset(new ScopedRunnableMethodFactory<RenderThread>(this));
 
   appcache_dispatcher_.reset(new AppCacheDispatcher(this));
   indexed_db_dispatcher_.reset(new IndexedDBDispatcher());
 
   db_message_filter_ = new DBMessageFilter();
   AddFilter(db_message_filter_.get());
 
+  VideoCaptureMessageFilter* video_capture_message_filter =
+      VideoCaptureMessageFilterCreator::SharedFilter();
+  AddFilter(video_capture_message_filter);
+
   content::GetContentClient()->renderer()->RenderThreadStarted();
 
   TRACE_EVENT_END_ETW("RenderThread::Init", 0, "");
 }
 
 RenderThread::~RenderThread() {
   FOR_EACH_OBSERVER(
       RenderProcessObserver, observers_, OnRenderProcessShutdown());
 
   // Wait for all databases to be closed.
   if (web_database_observer_impl_.get())
     web_database_observer_impl_->WaitForAllDatabasesToClose();
 
   // Shutdown in reverse of the initialization order.
   RemoveFilter(db_message_filter_.get());
   db_message_filter_ = NULL;
 
+  VideoCaptureMessageFilter* video_capture_message_filter =
+      VideoCaptureMessageFilterCreator::SharedFilter();
+  RemoveFilter(video_capture_message_filter);
+
   // Shutdown the file thread if it's running.
   if (file_thread_.get())
     file_thread_->Stop();
 
   if (webkit_client_.get())
     WebKit::shutdown();
 
   lazy_tls.Pointer()->Set(NULL);
 
   // TODO(port)
@@ skipping 478 matching lines @@
 
 void RenderThread::RegisterExtension(v8::Extension* extension) {
   WebScriptController::registerExtension(extension);
   v8_extensions_.insert(extension->name());
 }
 
 bool RenderThread::IsRegisteredExtension(
     const std::string& v8_extension_name) const {
   return v8_extensions_.find(v8_extension_name) != v8_extensions_.end();
 }