Keep playing audio even when opening another tab, going to another app etc.

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index 6c4573fb75aecf16a14461ae0f5f84b162823718..c29aa62bfe15498b0d4324dc12a85b27e44f4210 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -5680,8 +5680,14 @@ void RenderViewImpl::OnWasHidden() {
   RenderWidget::OnWasHidden();
 
 #if defined(OS_ANDROID)
+  DCHECK(media_player_manager_);

[qinmin, 2012/11/14 18:14:29]

this DCHECK is useless, if media_player_manager_ is null, it will crash in code
below.

[Miguel Garcia, 2012/11/14 18:50:32]

Done.

+
   // Inform WebMediaPlayerManagerAndroid to release all media player resources.
-  media_player_manager_->ReleaseMediaResources();
+  // unless some audio is playing.

[qinmin, 2012/11/14 18:14:29]

some media is playing

[Miguel Garcia, 2012/11/14 18:50:32]

Done.

+  // If something is in progress the resource will not be freed, it will
+  // only be freed once the tab is destroyed or if the user navigates away
+  // via WebMediaPlayerAndroid::Destroy
+  media_player_manager_->ReleaseMediaResourcesIfNotPlaying();
 #endif
 
   if (webview()) {