Enable the embedded L1/EME support in WebView.

content/browser/media/android/browser_media_player_manager.cc

Index: content/browser/media/android/browser_media_player_manager.cc
diff --git a/content/browser/media/android/browser_media_player_manager.cc b/content/browser/media/android/browser_media_player_manager.cc
index 79cbe61f00b41058f8f2a5406d470b2fb7db680d..45a05782595df8a70d90dcc8f9147f4b72ca22dd 100644
--- a/content/browser/media/android/browser_media_player_manager.cc
+++ b/content/browser/media/android/browser_media_player_manager.cc
@@ -333,7 +333,12 @@ void BrowserMediaPlayerManager::RequestMediaResources(int player_id) {
 }
 
 void BrowserMediaPlayerManager::ReleaseMediaResources(int player_id) {
-  // Nothing needs to be done.
+#if defined(VIDEO_HOLE)
+  WebContentsViewAndroid* view =
+      static_cast<WebContentsViewAndroid*>(web_contents_->GetView());
+  if (view)
+    view->ReleaseExternalVideoSurface(player_id);
+#endif  // defined(VIDEO_HOLE)
 }
 
 media::MediaResourceGetter*
@@ -473,8 +478,11 @@ void BrowserMediaPlayerManager::OnNotifyExternalSurface(
 
   WebContentsViewAndroid* view =
       static_cast<WebContentsViewAndroid*>(web_contents_->GetView());
-  if (view)
-    view->NotifyExternalSurface(player_id, is_request, rect);
+  if (view) {
+    if (is_request)
+      view->RequestExternalVideoSurface(player_id);
+    view->NotifyExternalVideoSurfacePositionChanged(player_id, rect);
+  }
 }
 #endif  // defined(VIDEO_HOLE)
 
@@ -499,6 +507,12 @@ void BrowserMediaPlayerManager::OnEnterFullscreen(int player_id) {
     return;
   }
 
+#if defined(VIDEO_HOLE)
+  WebContentsViewAndroid* view =
+      static_cast<WebContentsViewAndroid*>(web_contents_->GetView());
+  if (view)
+    view->ReleaseExternalVideoSurface(player_id);
+#endif  // defined(VIDEO_HOLE)
   if (video_view_.get()) {
     fullscreen_player_id_ = player_id;
     video_view_->OpenVideo();
@@ -571,13 +585,6 @@ void BrowserMediaPlayerManager::OnReleaseResources(int player_id) {
   MediaPlayerAndroid* player = GetPlayer(player_id);
   if (player)
     player->Release();
-
-#if defined(VIDEO_HOLE)
-  WebContentsViewAndroid* view =
-      static_cast<WebContentsViewAndroid*>(web_contents_->GetView());
-  if (view)
-    view->NotifyExternalSurface(player_id, false, gfx::RectF());
-#endif  // defined(VIDEO_HOLE)
 }
 
 void BrowserMediaPlayerManager::OnDestroyPlayer(int player_id) {