Defer media playback in background tabs.

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index ebb7f445307927598c46d2a5b1a654482584b97f..2c1ceae54d94f207dc3c7f7583fb60072c434225 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -153,6 +153,7 @@ class CONTENT_EXPORT ContentRendererClient {
   // can run |closure| immediately if they don't wish to defer media resource
   // loading.
   virtual void DeferMediaLoad(RenderFrame* render_frame,
+                              bool render_frame_has_played_media_before,

[Charlie Reis, 2015/08/18 17:30:03]

Maybe |has_played_media_before|?  The render frame part seems implicit from the
first parameter, and you can tie it together with a comment above.

[DaleCurtis, 2015/08/18 18:19:12]

Done.

                               const base::Closure& closure);
 
   // Allows the embedder to override creating a WebMediaStreamCenter. If it