gpu_fuzzer: cache shader translators

gpu/command_buffer/service/gles2_cmd_decoder_passthrough.cc

 // 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder_passthrough.h"
 
 namespace gpu {
 namespace gles2 {
 
 GLES2DecoderPassthroughImpl::GLES2DecoderPassthroughImpl(ContextGroup* group)
@@ skipping 347 matching lines @@
     error::ContextLostReason reason) {}
 
 gpu::gles2::Logger* GLES2DecoderPassthroughImpl::GetLogger() {
   return &logger_;
 }
 
 const gpu::gles2::ContextState* GLES2DecoderPassthroughImpl::GetContextState() {
   return nullptr;
 }
 
+scoped_refptr<ShaderTranslatorInterface>
+GLES2DecoderPassthroughImpl::GetTranslator(GLenum type) {
+  return nullptr;
+}
+
 #define GLES2_CMD_OP(name)                                               \
   {                                                                      \
       &GLES2DecoderPassthroughImpl::Handle##name, cmds::name::kArgFlags, \
       cmds::name::cmd_flags,                                             \
       sizeof(cmds::name) / sizeof(CommandBufferEntry) - 1,               \
   }, /* NOLINT */
 
 const GLES2DecoderPassthroughImpl::CommandInfo
     GLES2DecoderPassthroughImpl::command_info[] = {
         GLES2_COMMAND_LIST(GLES2_CMD_OP)};
 
 #undef GLES2_CMD_OP
 
 }  // namespace gles2
 }  // namespace gpu