Changed Blimp client to start with white screen before drawing contents

blimp/client/feature/compositor/blimp_compositor.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "blimp/client/feature/compositor/blimp_compositor.h"
 
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
 #include "base/numerics/safe_conversions.h"
@@ skipping 90 matching lines @@
 }
 
 void BlimpCompositor::DidFailToInitializeOutputSurface() {}
 
 void BlimpCompositor::WillCommit() {}
 
 void BlimpCompositor::DidCommit() {}
 
 void BlimpCompositor::DidCommitAndDrawFrame() {}
 
-void BlimpCompositor::DidCompleteSwapBuffers() {}
+void BlimpCompositor::DidCompleteSwapBuffers() {
+  client_->DidCompleteSwapBuffers();
+}
 
 void BlimpCompositor::DidCompletePageScaleAnimation() {}
 
 void BlimpCompositor::SetProtoReceiver(ProtoReceiver* receiver) {
   remote_proto_channel_receiver_ = receiver;
 }
 
 void BlimpCompositor::SendCompositorProto(
     const cc::proto::CompositorMessage& proto) {
   client_->SendCompositorMessage(render_widget_id_, proto);
@@ skipping 131 matching lines @@
       BlimpContextProvider::Create(window_,
                                    client_->GetGpuMemoryBufferManager());
 
   host_->SetOutputSurface(
       base::WrapUnique(new BlimpOutputSurface(context_provider)));
   output_surface_request_pending_ = false;
 }
 
 }  // namespace client
 }  // namespace blimp