cc/blimp: Remove Initialize and Close messages.

cc/trees/remote_channel_impl.cc

Index: cc/trees/remote_channel_impl.cc
diff --git a/cc/trees/remote_channel_impl.cc b/cc/trees/remote_channel_impl.cc
index f981df9dfd9bf162cd0ede80e10dab8f6bf83a43..b4b4d97ea3e2eeac34501d8ba750d570eedca60e 100644
--- a/cc/trees/remote_channel_impl.cc
+++ b/cc/trees/remote_channel_impl.cc
@@ -74,18 +74,6 @@ void RemoteChannelImpl::HandleProto(
     case proto::CompositorMessageToImpl::UNKNOWN:
       NOTIMPLEMENTED() << "Ignoring message of UNKNOWN type";
       break;
-    case proto::CompositorMessageToImpl::INITIALIZE_IMPL:
-      NOTREACHED() << "Should be handled by the embedder";
-      break;
-    case proto::CompositorMessageToImpl::CLOSE_IMPL:
-      NOTREACHED() << "Should be handled by the embedder";
-      break;
-    case proto::CompositorMessageToImpl::
-        MAIN_THREAD_HAS_STOPPED_FLINGING_ON_IMPL:
-      ImplThreadTaskRunner()->PostTask(
-          FROM_HERE, base::Bind(&ProxyImpl::MainThreadHasStoppedFlingingOnImpl,
-                                proxy_impl_weak_ptr_));
-      break;
     case proto::CompositorMessageToImpl::SET_NEEDS_COMMIT:
       VLOG(1) << "Received commit request from the engine.";
       ImplThreadTaskRunner()->PostTask(