Update from https://crrev.com/304715

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 653 matching lines @@
 
   GLuint reserved_ids_[2];
 
   // Current GL error bits.
   uint32 error_bits_;
 
   // Whether or not to print debugging info.
   bool debug_;
 
   // When true, the context is lost when a GL_OUT_OF_MEMORY error occurs.
-  bool lose_context_when_out_of_memory_;
+  const bool lose_context_when_out_of_memory_;
 
   // Whether or not to support client side arrays.
-  bool support_client_side_arrays_;
+  const bool support_client_side_arrays_;
 
   // Used to check for single threaded access.
   int use_count_;
 
   // Map of GLenum to Strings for glGetString.  We need to cache these because
   // the pointer passed back to the client has to remain valid for eternity.
   typedef std::map<uint32, std::set<std::string> > GLStringMap;
   GLStringMap gl_strings_;
 
   // Similar cache for glGetRequestableExtensionsCHROMIUM. We don't
@@ skipping 61 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_