Make gl_clear_broken workaround support core profile and use it under AMD Linux Catalyst driver

gpu/command_buffer/service/gles2_cmd_decoder.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.
 
 // This file contains the GLES2Decoder class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_
 
 #include <stdint.h>
@@ skipping 298 matching lines @@
   // Lose this context.
   virtual void MarkContextLost(error::ContextLostReason reason) = 0;
 
   virtual Logger* GetLogger() = 0;
 
   virtual void BeginDecoding();
   virtual void EndDecoding();
 
   virtual const ContextState* GetContextState() = 0;
   virtual scoped_refptr<ShaderTranslatorInterface> GetTranslator(
-      unsigned int type) = 0;
+      unsigned int type) const = 0;
 
  protected:
   GLES2Decoder();
 
   // Decode a command, and call the corresponding GL functions.
   // NOTE: DoCommand() is slower than calling DoCommands() on larger batches
   // of commands at once, and is now only used for tests that need to track
   // individual commands.
   error::Error DoCommand(unsigned int command,
                          unsigned int arg_count,
                          const volatile void* cmd_data) override;
 
  private:
   bool initialized_;
   bool debug_;
   bool log_commands_;
   DISALLOW_COPY_AND_ASSIGN(GLES2Decoder);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_H_