Expose GpuMemoryBufferId through glGetImageivCHROMIUM.

cc/test/test_gles2_interface.h

 // Copyright 2013 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 CC_TEST_TEST_GLES2_INTERFACE_H_
 #define CC_TEST_TEST_GLES2_INTERFACE_H_
 
 #include "gpu/command_buffer/client/gles2_interface_stub.h"
 
 namespace cc {
@@ skipping 96 matching lines @@
                             const void* data) override;
   GLuint CreateImageCHROMIUM(ClientBuffer buffer,
                              GLsizei width,
                              GLsizei height,
                              GLenum internalformat) override;
   void DestroyImageCHROMIUM(GLuint image_id) override;
   GLuint CreateGpuMemoryBufferImageCHROMIUM(GLsizei width,
                                             GLsizei height,
                                             GLenum internalformat,
                                             GLenum usage) override;
+  void GetImageivCHROMIUM(GLuint image_id, GLenum param, GLint* data) override;
   void BindTexImage2DCHROMIUM(GLenum target, GLint image_id) override;
   void ReleaseTexImage2DCHROMIUM(GLenum target, GLint image_id) override;
   void FramebufferRenderbuffer(GLenum target,
                                GLenum attachment,
                                GLenum renderbuffertarget,
                                GLuint renderbuffer) override;
   void FramebufferTexture2D(GLenum target,
                             GLenum attachment,
                             GLenum textarget,
                             GLuint texture,
@@ skipping 40 matching lines @@
   void LoseContextCHROMIUM(GLenum current, GLenum other) override;
   GLenum GetGraphicsResetStatusKHR() override;
 
  private:
   TestWebGraphicsContext3D* test_context_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_TEST_GLES2_INTERFACE_H_