[Chromecast] Adding pause/resume operations to VideoPlaneController.

chromecast/base/cast_resource.h

Index: chromecast/base/cast_resource.h
diff --git a/chromecast/base/cast_resource.h b/chromecast/base/cast_resource.h
index cd248d77edc26872e426c5c2a42ef54a2aac1e0a..84c92f4423d16ec2bd3c2dcaf449e87d51114119 100644
--- a/chromecast/base/cast_resource.h
+++ b/chromecast/base/cast_resource.h
@@ -53,6 +53,14 @@ class CastResource {
   };
 
   void SetCastResourceClient(Client* client);
+  // Called to initialize resources after OEM has granted them, and before
+  // they start getting used by consumers. Implementation must be synchronous
+  // since consumers will start using the resource immediately afterwards.
+  // TODO(esum): We should allow this method to be asynchronous in case an
+  // implementer needs to make expensive calls and doesn't want to block the
+  // UI thread (b/26239576). For now, don't do anything expensive in your
+  // implementation; if you really need to, then this bug has to be resolved.
+  virtual void InitializeResource(Resource resource) = 0;
   // Called to release resources. Implementation should call
   // Client::OnResourceReleased when resource is released on its side.
   virtual void ReleaseResource(Resource resource) = 0;