gpu_fuzzer: cache shader translators

gpu/command_buffer/service/gles2_cmd_decoder.h

Index: gpu/command_buffer/service/gles2_cmd_decoder.h
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.h b/gpu/command_buffer/service/gles2_cmd_decoder.h
index b9a026988adbb66172a02271a0ebb0a4ba8d9d22..f4d457e87dd6bac99501b30627f6b0b057633ee0 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.h
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.h
@@ -45,6 +45,7 @@ class GLES2Util;
 class ImageManager;
 class Logger;
 class QueryManager;
+class ShaderTranslatorInterface;
 class Texture;
 class TransformFeedbackManager;
 class VertexArrayManager;
@@ -327,6 +328,8 @@ class GPU_EXPORT GLES2Decoder : public base::SupportsWeakPtr<GLES2Decoder>,
   virtual void EndDecoding();
 
   virtual const ContextState* GetContextState() = 0;
+  virtual scoped_refptr<ShaderTranslatorInterface> GetTranslator(
+      unsigned int type) = 0;
 
  protected:
   GLES2Decoder();