content: Cleanup GpuMemoryBuffer allocation.

content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h

Index: content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h b/content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h
index c1bf38a18f84adc0ffe220985504ebc09ddf1517..9f552bcf17103ba3cd0549062c97c54e3e0d1861 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h
@@ -12,18 +12,18 @@ class IOSurfaceSupport;
 
 namespace content {
 
-// Provides implementation of a GPU memory buffer based
-// on an IO surface handle.
+// Implementation of GPU memory buffer based on IO surfaces.
 class GpuMemoryBufferImplIOSurface : public GpuMemoryBufferImpl {
  public:
-  GpuMemoryBufferImplIOSurface(gfx::Size size, unsigned internalformat);
+  GpuMemoryBufferImplIOSurface(const gfx::Size& size, unsigned internalformat);
   virtual ~GpuMemoryBufferImplIOSurface();
 
   static bool IsFormatSupported(unsigned internalformat);
   static bool IsUsageSupported(unsigned usage);
+  static bool IsConfigurationSupported(unsigned internalformat, unsigned usage);
   static uint32 PixelFormat(unsigned internalformat);
 
-  bool Initialize(gfx::GpuMemoryBufferHandle handle);
+  bool InitializeFromHandle(gfx::GpuMemoryBufferHandle handle);
 
   // Overridden from gfx::GpuMemoryBuffer:
   virtual void* Map() OVERRIDE;