Remove CompositeAndReadback from LayerTreeHost(Impl) and the Proxys.

cc/output/delegating_renderer.cc

 // Copyright 2012 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 "cc/output/delegating_renderer.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 57 matching lines @@
     capabilities_.allow_rasterize_on_demand = false;
   }
 }
 
 DelegatingRenderer::~DelegatingRenderer() {}
 
 const RendererCapabilitiesImpl& DelegatingRenderer::Capabilities() const {
   return capabilities_;
 }
 
-bool DelegatingRenderer::CanReadPixels() const { return false; }
-
 static ResourceProvider::ResourceId AppendToArray(
     ResourceProvider::ResourceIdArray* array,
     ResourceProvider::ResourceId id) {
   array->push_back(id);
   return id;
 }
 
 void DelegatingRenderer::DrawFrame(RenderPassList* render_passes_in_draw_order,
                                    float device_scale_factor,
                                    const gfx::Rect& device_viewport_rect,
@@ skipping 21 matching lines @@
 }
 
 void DelegatingRenderer::SwapBuffers(const CompositorFrameMetadata& metadata) {
   TRACE_EVENT0("cc,benchmark", "DelegatingRenderer::SwapBuffers");
   CompositorFrame compositor_frame;
   compositor_frame.metadata = metadata;
   compositor_frame.delegated_frame_data = delegated_frame_data_.Pass();
   output_surface_->SwapBuffers(&compositor_frame);
 }
 
-void DelegatingRenderer::GetFramebufferPixels(void* pixels,
-                                              const gfx::Rect& rect) {
-  NOTREACHED();
-}
-
 void DelegatingRenderer::ReceiveSwapBuffersAck(
     const CompositorFrameAck& ack) {
   resource_provider_->ReceiveReturnsFromParent(ack.resources);
 }
 
 bool DelegatingRenderer::IsContextLost() {
   ContextProvider* context_provider = output_surface_->context_provider();
   if (!context_provider)
     return false;
   return context_provider->IsContextLost();
@@ skipping 28 matching lines @@
   gpu::ManagedMemoryStats stats;
   stats.bytes_required = bytes_visible;
   stats.bytes_nice_to_have = bytes_visible_and_nearby;
   stats.bytes_allocated = bytes_allocated;
   stats.backbuffer_requested = false;
 
   context_provider->ContextSupport()->SendManagedMemoryStats(stats);
 }
 
 }  // namespace cc