Enable audio/video tag in content_shell

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 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_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/stats_table.h"
+#include "base/path_service.h"
 #include "base/shared_memory.h"
 #include "base/string_number_conversions.h"  // Temporary
 #include "base/threading/thread_local.h"
 #include "base/values.h"
 #include "base/win/scoped_com_initializer.h"
 #include "content/common/appcache/appcache_dispatcher.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/database_messages.h"
 #include "content/common/db_message_filter.h"
 #include "content/common/dom_storage_messages.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/indexed_db/indexed_db_dispatcher.h"
 #include "content/common/indexed_db/indexed_db_message_filter.h"
 #include "content/common/indexed_db/proxy_webidbfactory_impl.h"
 #include "content/common/npobject_util.h"
 #include "content/common/plugin_messages.h"
 #include "content/common/resource_dispatcher.h"
 #include "content/common/resource_messages.h"
 #include "content/common/view_messages.h"
 #include "content/common/web_database_observer_impl.h"
+#include "content/public/common/content_paths.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/renderer_preferences.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/public/renderer/render_process_observer.h"
 #include "content/public/renderer/render_view_visitor.h"
 #include "content/renderer/devtools_agent_filter.h"
 #include "content/renderer/gpu/compositor_thread.h"
 #include "content/renderer/media/audio_input_message_filter.h"
 #include "content/renderer/media/audio_message_filter.h"
 #include "content/renderer/media/video_capture_impl_manager.h"
 #include "content/renderer/media/video_capture_message_filter.h"
 #include "content/renderer/plugin_channel_host.h"
 #include "content/renderer/render_process_impl.h"
 #include "content/renderer/render_view_impl.h"
 #include "content/renderer/renderer_webkitplatformsupport_impl.h"
 #include "grit/content_resources.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_platform_file.h"
+#include "media/base/media.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/WebColorName.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositor.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"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebNetworkStateNotifier.h"
@@ skipping 150 matching lines @@
   audio_message_filter_ = new AudioMessageFilter();
   AddFilter(audio_message_filter_.get());
 
   devtools_agent_message_filter_ = new DevToolsAgentFilter();
   AddFilter(devtools_agent_message_filter_.get());
 
   AddFilter(new IndexedDBMessageFilter);
 
   content::GetContentClient()->renderer()->RenderThreadStarted();
 
+  // Note that under Linux, the media library will normally already have
+  // been initialized by the Zygote before this instance became a Renderer.
+  FilePath media_path;
+  PathService::Get(content::DIR_MEDIA_LIBS, &media_path);
+  if (!media_path.empty())
+    media::InitializeMediaLibrary(media_path);
+
   TRACE_EVENT_END_ETW("RenderThreadImpl::Init", 0, "");
 }
 
 RenderThreadImpl::~RenderThreadImpl() {
   FOR_EACH_OBSERVER(
       RenderProcessObserver, observers_, OnRenderProcessShutdown());
 
   // Wait for all databases to be closed.
   if (web_database_observer_impl_.get())
     web_database_observer_impl_->WaitForAllDatabasesToClose();
@@ skipping 273 matching lines @@
       !command_line.HasSwitch(switches::kDisableSessionStorage));
 
   WebRuntimeFeatures::enableIndexedDatabase(true);
 
   WebRuntimeFeatures::enableGeolocation(
       !command_line.HasSwitch(switches::kDisableGeolocation));
 
   WebKit::WebRuntimeFeatures::enableMediaSource(
       command_line.HasSwitch(switches::kEnableMediaSource));
 
+  WebRuntimeFeatures::enableMediaPlayer(
+      media::IsMediaLibraryInitialized());
+
   WebKit::WebRuntimeFeatures::enableMediaStream(
       command_line.HasSwitch(switches::kEnableMediaStream));
 
   WebKit::WebRuntimeFeatures::enableFullScreenAPI(
       !command_line.HasSwitch(switches::kDisableFullScreen));
 
   WebKit::WebRuntimeFeatures::enablePointerLock(
       command_line.HasSwitch(switches::kEnablePointerLock));
 
   WebKit::WebRuntimeFeatures::enableVideoTrack(
@@ skipping 410 matching lines @@
 
 scoped_refptr<base::MessageLoopProxy>
 RenderThreadImpl::GetFileThreadMessageLoopProxy() {
   DCHECK(message_loop() == MessageLoop::current());
   if (!file_thread_.get()) {
     file_thread_.reset(new base::Thread("Renderer::FILE"));
     file_thread_->Start();
   }
   return file_thread_->message_loop_proxy();
 }