cc: Update Main RendererCapabilities on DeferredInitialize

cc/trees/layer_tree_host.h

Index: cc/trees/layer_tree_host.h
diff --git a/cc/trees/layer_tree_host.h b/cc/trees/layer_tree_host.h
index 1a2a65b4a62396a1788351b5ba1591624aab103f..48a03ef168cc8cbf6544cb44de00000f43eecab2 100644
--- a/cc/trees/layer_tree_host.h
+++ b/cc/trees/layer_tree_host.h
@@ -73,6 +73,9 @@ struct CC_EXPORT RendererCapabilities {
   RendererCapabilities();
   ~RendererCapabilities();
 
+  bool operator==(const RendererCapabilities& other) const;
+  bool operator!=(const RendererCapabilities& other) const;
+
   // Duplicate any modification to this list to RendererCapabilitiesImpl.
   ResourceFormat best_texture_format;
   bool allow_partial_texture_updates;
@@ -129,6 +132,7 @@ class CC_EXPORT LayerTreeHost {
   };
   virtual CreateResult OnCreateAndInitializeOutputSurfaceAttempted(
       bool success);
+  void RendererCapabilitiesChanged();
   void DidCommitAndDrawFrame() { client_->DidCommitAndDrawFrame(); }
   void DidCompleteSwapBuffers() { client_->DidCompleteSwapBuffers(); }
   void DeleteContentsTexturesOnImplThread(ResourceProvider* resource_provider);