Expose GpuMemoryBufferId through glGetImageivCHROMIUM.

gpu/command_buffer/client/gles2_trace_implementation_autogen.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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 637 matching lines @@
                             void* info) 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 GetTranslatedShaderSourceANGLE(GLuint shader,
                                     GLsizei bufsize,
                                     GLsizei* length,
                                     char* source) override;
 void PostSubBufferCHROMIUM(GLint x,
                            GLint y,
                            GLint width,
                            GLint height) override;
 void TexImageIOSurface2DCHROMIUM(GLenum target,
                                  GLsizei width,
@@ skipping 182 matching lines @@
                                     const char* name) override;
 void BindFragDataLocationEXT(GLuint program,
                              GLuint colorNumber,
                              const char* name) override;
 GLint GetFragDataIndexEXT(GLuint program, const char* name) override;
 void UniformMatrix4fvStreamTextureMatrixCHROMIUM(
     GLint location,
     GLboolean transpose,
     const GLfloat* default_value) override;
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_TRACE_IMPLEMENTATION_AUTOGEN_H_