Add some Mojo C thunks used by cc when turning on impl-side painting.

mojo/public/c/gles2/gles2_call_visitor_chromium_image_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!
+
+VISIT_GL_CALL(
+    CreateImageCHROMIUM,
+    GLuint,
+    (ClientBuffer buffer, GLsizei width, GLsizei height, GLenum internalformat),
+    (buffer, width, height, internalformat))
+VISIT_GL_CALL(DestroyImageCHROMIUM, void, (GLuint image_id), (image_id))
+VISIT_GL_CALL(
+    CreateGpuMemoryBufferImageCHROMIUM,
+    GLuint,
+    (GLsizei width, GLsizei height, GLenum internalformat, GLenum usage),
+    (width, height, internalformat, usage))
+VISIT_GL_CALL(BindTexImage2DCHROMIUM,
+              void,
+              (GLenum target, GLint imageId),
+              (target, imageId))
+VISIT_GL_CALL(ReleaseTexImage2DCHROMIUM,
+              void,
+              (GLenum target, GLint imageId),
+              (target, imageId))