gpu: Associate all GpuMemoryBuffers with unique IDs.

content/common/gpu/gpu_memory_buffer_factory.h

 // Copyright 2014 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_MEMORY_BUFFER_FACTORY_H_
 #define CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/geometry/size.h"
@@ skipping 10 matching lines @@
 namespace content {
 
 class GpuMemoryBufferFactory {
  public:
   GpuMemoryBufferFactory() {}
   virtual ~GpuMemoryBufferFactory() {}
 
   // Creates a new platform specific factory instance.
   static scoped_ptr<GpuMemoryBufferFactory> Create();
 
-  // Creates a GPU memory buffer instance from |handle|. Whether the storage for
-  // the buffer is passed with the handle or allocated as part of buffer
-  // creation depends on the type. A valid handle is returned on success.
+  // Creates a GPU memory buffer instance of |type|. A valid handle is
+  // returned on success.
   virtual gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
-      const gfx::GpuMemoryBufferHandle& handle,
+      gfx::GpuMemoryBufferType type,
+      gfx::GpuMemoryBufferId id,
       const gfx::Size& size,
       gfx::GpuMemoryBuffer::Format format,
-      gfx::GpuMemoryBuffer::Usage usage) = 0;
+      gfx::GpuMemoryBuffer::Usage usage,
+      int client_id) = 0;
 
-  // Destroys GPU memory buffer identified by |handle|.
-  virtual void DestroyGpuMemoryBuffer(
-      const gfx::GpuMemoryBufferHandle& handle) = 0;
+  // Destroys GPU memory buffer identified by |id|.
+  virtual void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferType type,
+                                      gfx::GpuMemoryBufferId id,
+                                      int client_id) = 0;
 
   // Type-checking downcast routine.
   virtual gpu::ImageFactory* AsImageFactory() = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_H_