Update from https://crrev.com/312600

gpu/command_buffer/client/gles2_implementation.h

 // Copyright (c) 2012 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 GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_
 
 #include <GLES2/gl2.h>
 
 #include <list>
@@ skipping 460 matching lines @@
   void DeleteRenderbuffersHelper(GLsizei n, const GLuint* renderbuffers);
   void DeleteTexturesHelper(GLsizei n, const GLuint* textures);
   bool DeleteProgramHelper(GLuint program);
   bool DeleteShaderHelper(GLuint shader);
   void DeleteQueriesEXTHelper(GLsizei n, const GLuint* queries);
   void DeleteVertexArraysOESHelper(GLsizei n, const GLuint* arrays);
   void DeleteValuebuffersCHROMIUMHelper(GLsizei n, const GLuint* valuebuffers);
   void DeleteSamplersHelper(GLsizei n, const GLuint* samplers);
   void DeleteTransformFeedbacksHelper(
       GLsizei n, const GLuint* transformfeedbacks);
+  void DeleteSyncHelper(GLsync sync);
 
   void DeleteBuffersStub(GLsizei n, const GLuint* buffers);
   void DeleteFramebuffersStub(GLsizei n, const GLuint* framebuffers);
   void DeleteRenderbuffersStub(GLsizei n, const GLuint* renderbuffers);
   void DeleteTexturesStub(GLsizei n, const GLuint* textures);
   void DeleteProgramStub(GLsizei n, const GLuint* programs);
   void DeleteShaderStub(GLsizei n, const GLuint* shaders);
   void DeleteVertexArraysOESStub(GLsizei n, const GLuint* arrays);
   void DeleteValuebuffersCHROMIUMStub(GLsizei n, const GLuint* valuebuffers);
   void DeleteSamplersStub(GLsizei n, const GLuint* samplers);
   void DeleteTransformFeedbacksStub(
       GLsizei n, const GLuint* transformfeedbacks);
+  void DeleteSyncStub(GLsizei n, const GLuint* syncs);
 
   void BufferDataHelper(
       GLenum target, GLsizeiptr size, const void* data, GLenum usage);
   void BufferSubDataHelper(
       GLenum target, GLintptr offset, GLsizeiptr size, const void* data);
   void BufferSubDataHelperImpl(
       GLenum target, GLintptr offset, GLsizeiptr size, const void* data,
       ScopedTransferBufferPtr* buffer);
 
   GLuint CreateImageCHROMIUMHelper(ClientBuffer buffer,
@@ skipping 289 matching lines @@
 
 inline bool GLES2Implementation::GetTexParameterivHelper(
     GLenum /* target */, GLenum /* pname */, GLint* /* params */) {
   return false;
 }
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_H_