gpu: Add CHROMIUM_gpu_memory_buffer_image extension.

gpu/command_buffer/client/gles2_interface_autogen.h

Index: gpu/command_buffer/client/gles2_interface_autogen.h
diff --git a/gpu/command_buffer/client/gles2_interface_autogen.h b/gpu/command_buffer/client/gles2_interface_autogen.h
index 904fdc7440026cabf3e01fe579c1b73fda4938a6..c64fdfc2f62e9c1ae91f180b9fef0166322642b0 100644
--- a/gpu/command_buffer/client/gles2_interface_autogen.h
+++ b/gpu/command_buffer/client/gles2_interface_autogen.h
@@ -421,6 +421,10 @@ virtual void DestroyImageCHROMIUM(GLuint image_id) = 0;
 virtual void GetImageParameterivCHROMIUM(GLuint image_id,
                                          GLenum pname,
                                          GLint* params) = 0;
+virtual GLuint CreateGpuMemoryBufferImageCHROMIUM(GLsizei width,
+                                                  GLsizei height,
+                                                  GLenum internalformat,
+                                                  GLenum usage) = 0;
 virtual void GetTranslatedShaderSourceANGLE(GLuint shader,
                                             GLsizei bufsize,
                                             GLsizei* length,