Adding the logic for releasing decoder resources in WebMediaPlayerManagerAndroid

webkit/media/android/webmediaplayer_android.cc

Index: webkit/media/android/webmediaplayer_android.cc
diff --git a/webkit/media/android/webmediaplayer_android.cc b/webkit/media/android/webmediaplayer_android.cc
index faaadaf79731cebeadb3c1947b04d0003aa3bea2..576c9dd5beb91be258f33124f73dde118e882e24 100644
--- a/webkit/media/android/webmediaplayer_android.cc
+++ b/webkit/media/android/webmediaplayer_android.cc
@@ -63,7 +63,8 @@ WebMediaPlayerAndroid::WebMediaPlayerAndroid(
       client_(client),
       buffered_(1u),
       video_frame_(new WebVideoFrameImpl(VideoFrame::CreateEmptyFrame())),
-      proxy_(new WebMediaPlayerProxyAndroid(base::MessageLoopProxy::current(),
+      main_loop_(MessageLoop::current()),
+      proxy_(new WebMediaPlayerProxyAndroid(main_loop_->message_loop_proxy(),
                                             AsWeakPtr())),
       prepared_(false),
       duration_(0),
@@ -81,7 +82,9 @@ WebMediaPlayerAndroid::WebMediaPlayerAndroid(
       stream_id_(0),
       needs_establish_peer_(true),
       stream_texture_factory_(factory) {
-  player_id_ = manager_->RegisterMediaPlayer(this);
+  main_loop_->AddDestructionObserver(this);
+  if (manager_)
+    player_id_ = manager_->RegisterMediaPlayer(this);
   if (stream_texture_factory_.get())
     stream_texture_proxy_.reset(stream_texture_factory_->CreateProxy());
 }
@@ -91,7 +94,11 @@ WebMediaPlayerAndroid::~WebMediaPlayerAndroid() {
     media_player_->Stop();
   }
 
-  manager_->UnregisterMediaPlayer(player_id_);
+  if (manager_)
+    manager_->UnregisterMediaPlayer(player_id_);
+
+  if (main_loop_)
+    main_loop_->RemoveDestructionObserver(this);
 }
 
 void WebMediaPlayerAndroid::InitIncognito(bool incognito_mode) {
@@ -486,6 +493,9 @@ void WebMediaPlayerAndroid::InitializeMediaPlayer() {
   }
   media_player_->SetDataSource(url_.spec(), cookies, incognito_mode_);
 
+  if (manager_)
+    manager_->RequestMediaResources(player_id_);
+
   media_player_->Prepare(
       base::Bind(&WebMediaPlayerProxyAndroid::MediaInfoCallback, proxy_),
       base::Bind(&WebMediaPlayerProxyAndroid::MediaErrorCallback, proxy_),
@@ -548,6 +558,11 @@ void WebMediaPlayerAndroid::DestroyStreamTexture() {
   stream_id_ = 0;
 }
 
+void WebMediaPlayerAndroid::WillDestroyCurrentMessageLoop() {
+  manager_ = NULL;
+  main_loop_ = NULL;
+}
+
 WebVideoFrame* WebMediaPlayerAndroid::getCurrentFrame() {
   if (!stream_texture_proxy_->IsInitialized() && stream_id_) {
     stream_texture_proxy_->Initialize(