[Android] Add workaround to unbind gpu memory buffer only on NVIDIA

ui/gl/gl_image.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 UI_GL_GL_IMAGE_H_
 #define UI_GL_GL_IMAGE_H_
 
 #include "base/memory/ref_counted.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 #include "ui/gfx/native_widget_types.h"
@@ skipping 21 matching lines @@
 
   // Release image from texture currently bound to GL_TEXTURE_2D target.
   virtual void ReleaseTexImage();
 
   // Called before the texture is used for drawing.
   virtual void WillUseTexImage();
 
   // Called after the texture has been used for drawing.
   virtual void DidUseTexImage();
 
+  // Indicate that the DidUse should release image in DidUse.

[reveman, 2013/11/12 20:56:54]

Please rephrase this comment. Maybe "Indicate that image should be released
after use"?

[boliu, 2013/11/12 21:06:50]

Done.

+  // (For an Android work-around only).
+  virtual void SetReleaseAfterUse();
+
   // Create a GL image for a window.
   static scoped_refptr<GLImage> CreateGLImage(gfx::PluginWindowHandle window);
 
   // Create a GL image for a GPU Memory buffer.
   static scoped_refptr<GLImage> CreateGLImageForGpuMemoryBuffer(
       gfx::GpuMemoryBufferHandle buffer,
       gfx::Size size,
       unsigned internalformat);
 
  protected:
   virtual ~GLImage();
 
  private:
   friend class base::RefCounted<GLImage>;
 
   DISALLOW_COPY_AND_ASSIGN(GLImage);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_IMAGE_H_