cc: Implement overdraw feedback debugging feature.

blimp/client/support/compositor/blimp_embedder_compositor.cc

 // Copyright 2016 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/support/compositor/blimp_embedder_compositor.h"
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 48 matching lines @@
   void EnsureBackbuffer() override {}
   void DiscardBackbuffer() override {
     context_provider()->ContextGL()->DiscardBackbufferCHROMIUM();
   }
   void BindFramebuffer() override {
     context_provider()->ContextGL()->BindFramebuffer(GL_FRAMEBUFFER, 0);
   }
   void Reshape(const gfx::Size& size,
                float device_scale_factor,
                const gfx::ColorSpace& color_space,
-               bool has_alpha) override {
+               bool has_alpha,
+               bool use_stencil) override {
     context_provider()->ContextGL()->ResizeCHROMIUM(
         size.width(), size.height(), device_scale_factor, has_alpha);
   }
   void SwapBuffers(cc::OutputSurfaceFrame frame) override {
     context_provider_->ContextSupport()->Swap();
     // The ack for SwapBuffers must be run asynchronously, that will be
     // satisfied since we will go through a PostTask here.
     task_runner_->PostTask(
         FROM_HERE, base::Bind(&DisplayOutputSurface::SwapBuffersCallback,
                               weak_ptr_factory_.GetWeakPtr()));
@@ skipping 149 matching lines @@
   auto compositor_frame_sink = base::MakeUnique<cc::DirectCompositorFrameSink>(
       frame_sink_id_, compositor_dependencies_->GetSurfaceManager(),
       display_.get(), context_provider_, nullptr, gpu_memory_buffer_manager,
       shared_bitmap_manager);
 
   host_->SetCompositorFrameSink(std::move(compositor_frame_sink));
 }
 
 }  // namespace client
 }  // namespace blimp