Make gpu black list work again on Linux

content/browser/gpu/gpu_data_manager_impl.cc

 // Copyright (c) 2013 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 "content/browser/gpu/gpu_data_manager_impl.h"
 
 #include "content/browser/gpu/gpu_data_manager_impl_private.h"
 
 namespace content {
 
@@ skipping 125 matching lines @@
     std::string* disabled_extensions) const {
   base::AutoLock auto_lock(lock_);
   private_->GetDisabledExtensions(disabled_extensions);
 }
 
 void GpuDataManagerImpl::Initialize() {
   base::AutoLock auto_lock(lock_);
   private_->Initialize();
 }
 
+bool GpuDataManagerImpl::IsInitialized() const {
+  base::AutoLock auto_lock(lock_);
+  return private_->IsInitialized();
+}
+
 void GpuDataManagerImpl::UpdateGpuInfo(const gpu::GPUInfo& gpu_info) {
   base::AutoLock auto_lock(lock_);
   private_->UpdateGpuInfo(gpu_info);
 }
 
 void GpuDataManagerImpl::UpdateVideoMemoryUsageStats(
     const GPUVideoMemoryUsageStats& video_memory_usage_stats) {
   base::AutoLock auto_lock(lock_);
   private_->UpdateVideoMemoryUsageStats(video_memory_usage_stats);
 }
@@ skipping 121 matching lines @@
 }
 
 GpuDataManagerImpl::GpuDataManagerImpl()
     : private_(GpuDataManagerImplPrivate::Create(this)) {
 }
 
 GpuDataManagerImpl::~GpuDataManagerImpl() {
 }
 
 }  // namespace content