[GPU] GLES2 lost context recovery

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // Copyright (c) 2009 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <vector>
 #include <string>
@@ skipping 1241 matching lines @@
   glLinkProgram(program);
   GLenum error = glGetError();
   if (error != GL_NO_ERROR) {
     RemoveProgramInfo(program);
     SetGLError(error);
   } else {
     UpdateProgramInfo(program);
   }
 };
 
-// NOTE: If you need to know the results of SwapBuffers (like losing
-//    the context) then add a new command. Do NOT make SwapBuffers synchronous.
 void GLES2DecoderImpl::DoSwapBuffers() {
 #if defined(UNIT_TEST)
 #elif defined(OS_WIN)
   ::SwapBuffers(device_context_);
 #elif defined(OS_LINUX)
   DCHECK(window());
   window()->SwapBuffers();
 #endif
 }
 
@@ skipping 631 matching lines @@
   return error::kNoError;
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu