Decoupling backbuffer allocation suggestion from frontbuffer allocation suggestion.

content/common/gpu/gpu_command_buffer_stub.h

 // Copyright (c) 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.
 
 #ifndef CONTENT_COMMON_GPU_GPU_COMMAND_BUFFER_STUB_H_
 #define CONTENT_COMMON_GPU_GPU_COMMAND_BUFFER_STUB_H_
 #pragma once
 
 #if defined(ENABLE_GPU)
 
@@ skipping 54 matching lines @@
   // Will not have surface state if this is an offscreen commandbuffer.
   virtual bool client_has_memory_allocation_changed_callback() const = 0;
   virtual bool has_surface_state() const = 0;
   virtual const SurfaceState& surface_state() const = 0;
 
   virtual gfx::Size GetSurfaceSize() const = 0;
 
   virtual bool IsInSameContextShareGroup(
       const GpuCommandBufferStubBase& other) const = 0;
 
-  virtual void SendMemoryAllocationToProxy(
-      const GpuMemoryAllocation& allocation) = 0;
-
   virtual void SetMemoryAllocation(
       const GpuMemoryAllocation& allocation) = 0;
 };
 
 class GpuCommandBufferStub
     : public GpuCommandBufferStubBase,
       public IPC::Channel::Listener,
       public IPC::Message::Sender,
       public base::SupportsWeakPtr<GpuCommandBufferStub> {
  public:
@@ skipping 34 matching lines @@
   virtual const GpuCommandBufferStubBase::SurfaceState& surface_state() const
       OVERRIDE;
 
   // Returns surface size.
   virtual gfx::Size GetSurfaceSize() const OVERRIDE;
 
   // Returns true iff |other| is in the same context share group as this stub.
   virtual bool IsInSameContextShareGroup(
       const GpuCommandBufferStubBase& other) const OVERRIDE;
 
-  // Sends memory allocation limits to render process.
-  virtual void SendMemoryAllocationToProxy(
-      const GpuMemoryAllocation& allocation) OVERRIDE;
-
   // Sets buffer usage depending on Memory Allocation
   virtual void SetMemoryAllocation(
       const GpuMemoryAllocation& allocation) OVERRIDE;
 
   // Whether this command buffer can currently handle IPC messages.
   bool IsScheduled();
 
   // Whether this command buffer needs to be polled again in the future.
   bool HasMoreWork();
 
@@ skipping 87 matching lines @@
   gfx::Size initial_size_;
   gpu::gles2::DisallowedFeatures disallowed_features_;
   std::string allowed_extensions_;
   std::vector<int32> requested_attribs_;
   gfx::GpuPreference gpu_preference_;
   int32 route_id_;
   bool software_;
   bool client_has_memory_allocation_changed_callback_;
   uint32 last_flush_count_;
   scoped_ptr<GpuCommandBufferStubBase::SurfaceState> surface_state_;
-  GpuMemoryAllocation allocation_;
 
   scoped_ptr<gpu::CommandBufferService> command_buffer_;
   scoped_ptr<gpu::gles2::GLES2Decoder> decoder_;
   scoped_ptr<gpu::GpuScheduler> scheduler_;
   scoped_refptr<gfx::GLContext> context_;
   scoped_refptr<gfx::GLSurface> surface_;
 
   // SetParent may be called before Initialize, in which case we need to keep
   // around the parent stub, so that Initialize can set the parent correctly.
   base::WeakPtr<GpuCommandBufferStub> parent_stub_for_initialization_;
   uint32 parent_texture_for_initialization_;
 
   GpuWatchdog* watchdog_;
 
   std::deque<IPC::Message*> delayed_echos_;
 
   // Zero or more video decoders owned by this stub, keyed by their
   // decoder_route_id.
   IDMap<GpuVideoDecodeAccelerator, IDMapOwnPointer> video_decoders_;
 
   ObserverList<DestructionObserver> destruction_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuCommandBufferStub);
 };
 
 #endif  // defined(ENABLE_GPU)
 
 #endif  // CONTENT_COMMON_GPU_GPU_COMMAND_BUFFER_STUB_H_