Update from chromium https://crrev.com/302282

gpu/command_buffer/service/error_state.h

 // Copyright (c) 2013 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 contains the ErrorState class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_ERROR_STATE_H_
 #define GPU_COMMAND_BUFFER_SERVICE_ERROR_STATE_H_
 
 #include <stdint.h>
@@ skipping 41 matching lines @@
     error_state->CopyRealGLErrorsToWrapper(__FILE__, __LINE__, function_name)
 // Use to look at the real GL error and still pass it on to the user.
 #define ERRORSTATE_PEEK_GL_ERROR(error_state, function_name) \
     error_state->PeekGLError(__FILE__, __LINE__, function_name)
 // Use to clear all current GL errors. FAILS if there are any.
 #define ERRORSTATE_CLEAR_REAL_GL_ERRORS(error_state, function_name) \
     error_state->ClearRealGLErrors(__FILE__, __LINE__, function_name)
 
 class GPU_EXPORT ErrorStateClient {
  public:
+  virtual void OnContextLostError() = 0;
   // GL_OUT_OF_MEMORY can cause side effects such as losing the context.
   virtual void OnOutOfMemoryError() = 0;
 };
 
 class GPU_EXPORT ErrorState {
  public:
   virtual ~ErrorState();
 
   static ErrorState* Create(ErrorStateClient* client, Logger* logger);
 
@@ skipping 47 matching lines @@
   ErrorState();
 
   DISALLOW_COPY_AND_ASSIGN(ErrorState);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_ERROR_STATE_H_