gpu_fuzzer: cache shader translators

gpu/command_buffer/service/gles2_cmd_decoder_passthrough.h

 // Copyright (c) 2016 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 GLES2DecoderPassthroughImpl class.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_PASSTHROUGH_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_PASSTHROUGH_H_
 
 #include "base/memory/ref_counted.h"
@@ skipping 188 matching lines @@
 
   // Returns true if the context was lost specifically by GL_ARB_robustness.
   bool WasContextLostByRobustnessExtension() const override;
 
   // Lose this context.
   void MarkContextLost(error::ContextLostReason reason) override;
 
   Logger* GetLogger() override;
 
   const ContextState* GetContextState() override;
+  scoped_refptr<ShaderTranslatorInterface> GetTranslator(GLenum type) override;
 
  private:
   int commands_to_process_;
 
   DebugMarkerManager debug_marker_manager_;
   Logger logger_;
 
 #define GLES2_CMD_OP(name) \
   Error Handle##name(uint32_t immediate_data_size, const void* data);
 
@@ skipping 28 matching lines @@
 
 // Include the prototypes of all the doer functions from a separate header to
 // keep this file clean.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doer_prototypes.h"
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GLES2_CMD_DECODER_PASSTHROUGH_H_