content: Cleanup GpuMemoryBufferImpl destruction.

content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h

Index: content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h
diff --git a/content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h b/content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h
index cfce0ff28daedce4dd256460fb729d9095acb398..ea1715362303cae9c3fcdc20f0331a2fa4a58364 100644
--- a/content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h
+++ b/content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h
@@ -14,17 +14,17 @@ namespace content {
 // Implementation of GPU memory buffer based on SurfaceTextures.
 class GpuMemoryBufferImplSurfaceTexture : public GpuMemoryBufferImpl {
  public:
-  GpuMemoryBufferImplSurfaceTexture(const gfx::Size& size,
-                                    unsigned internalformat);
-  virtual ~GpuMemoryBufferImplSurfaceTexture();
+  static scoped_ptr<GpuMemoryBufferImpl> CreateFromHandle(
+      const gfx::GpuMemoryBufferHandle& handle,
+      const gfx::Size& size,
+      unsigned internalformat,
+      const DestructionCallback& callback);
 
   static bool IsFormatSupported(unsigned internalformat);
   static bool IsUsageSupported(unsigned usage);
   static bool IsConfigurationSupported(unsigned internalformat, unsigned usage);
   static int WindowFormat(unsigned internalformat);
 
-  bool InitializeFromHandle(const gfx::GpuMemoryBufferHandle& handle);
-
   // Overridden from gfx::GpuMemoryBuffer:
   virtual void* Map() OVERRIDE;
   virtual void Unmap() OVERRIDE;
@@ -32,6 +32,11 @@ class GpuMemoryBufferImplSurfaceTexture : public GpuMemoryBufferImpl {
   virtual uint32 GetStride() const OVERRIDE;
 
  private:
+  GpuMemoryBufferImplSurfaceTexture(const gfx::Size& size,
+                                    unsigned internalformat,
+                                    const DestructionCallback& callback);
+  virtual ~GpuMemoryBufferImplSurfaceTexture();
+
   gfx::SurfaceTextureId surface_texture_id_;
   ANativeWindow* native_window_;
   size_t stride_;