Move flush id from WebGraphicsContext3DImpl to GLES2Implementation.

gpu/command_buffer/client/gles2_interface_stub_impl_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 1019 matching lines @@
     GLuint /* background_color */,
     GLuint /* edge_aa_mask */,
     const GLfloat* /* bounds_rect */,
     GLboolean /* is_clipped */,
     const GLfloat* /* clip_rect */,
     GLint /* sorting_context_id */,
     const GLfloat* /* transform */) {}
 void GLES2InterfaceStub::CommitOverlayPlanesCHROMIUM() {}
 void GLES2InterfaceStub::SwapInterval(GLint /* interval */) {}
 void GLES2InterfaceStub::FlushDriverCachesCHROMIUM() {}
+GLuint GLES2InterfaceStub::GetLastFlushIdCHROMIUM() {
+  return 0;
+}
 void GLES2InterfaceStub::MatrixLoadfCHROMIUM(GLenum /* matrixMode */,
                                              const GLfloat* /* m */) {}
 void GLES2InterfaceStub::MatrixLoadIdentityCHROMIUM(GLenum /* matrixMode */) {}
 GLuint GLES2InterfaceStub::GenPathsCHROMIUM(GLsizei /* range */) {
   return 0;
 }
 void GLES2InterfaceStub::DeletePathsCHROMIUM(GLuint /* path */,
                                              GLsizei /* range */) {}
 GLboolean GLES2InterfaceStub::IsPathCHROMIUM(GLuint /* path */) {
   return 0;
@@ skipping 113 matching lines @@
                                                  const char* /* name */) {}
 GLint GLES2InterfaceStub::GetFragDataIndexEXT(GLuint /* program */,
                                               const char* /* name */) {
   return 0;
 }
 void GLES2InterfaceStub::UniformMatrix4fvStreamTextureMatrixCHROMIUM(
     GLint /* location */,
     GLboolean /* transpose */,
     const GLfloat* /* default_value */) {}
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_INTERFACE_STUB_IMPL_AUTOGEN_H_