Fix a bug in the implementation of DescheduleUntilFinishedCHROMIUM.

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 253 matching lines @@
 }
 
 void GLES2DecoderPassthroughImpl::ProcessPendingQueries(bool did_finish) {}
 
 bool GLES2DecoderPassthroughImpl::HasMoreIdleWork() const {
   return false;
 }
 
 void GLES2DecoderPassthroughImpl::PerformIdleWork() {}
 
+bool GLES2DecoderPassthroughImpl::HasPollingWork() const {
+  return false;
+}
+
+void GLES2DecoderPassthroughImpl::PerformPollingWork() {}
+
 bool GLES2DecoderPassthroughImpl::GetServiceTextureId(
     uint32_t client_texture_id,
     uint32_t* service_texture_id) {
   return false;
 }
 
 gpu::error::ContextLostReason
 GLES2DecoderPassthroughImpl::GetContextLostReason() {
   return error::kUnknown;
 }
@@ skipping 84 matching lines @@
   }, /* NOLINT */
 
 const GLES2DecoderPassthroughImpl::CommandInfo
     GLES2DecoderPassthroughImpl::command_info[] = {
         GLES2_COMMAND_LIST(GLES2_CMD_OP)};
 
 #undef GLES2_CMD_OP
 
 }  // namespace gles2
 }  // namespace gpu