Linux: move X operations from the IO to UI2 thread.

chrome/browser/browser_process_impl.h

 // Copyright (c) 2006-2008 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.
 
 // When each service is created, we set a flag indicating this. At this point,
 // the service initialization could fail or succeed. This allows us to remember
 // if we tried to create a service, and not try creating it over and over if
 // the creation failed.
 
 #ifndef CHROME_BROWSER_BROWSER_PROCESS_IMPL_H__
@@ skipping 55 matching lines @@
     return file_thread_.get();
   }
 
   virtual base::Thread* db_thread() {
     DCHECK(CalledOnValidThread());
     if (!created_db_thread_)
       CreateDBThread();
     return db_thread_.get();
   }
 
+#if defined(OS_LINUX)
+  virtual base::Thread* background_x11_thread() {
+    DCHECK(CalledOnValidThread());
+    // The BACKGROUND_X11 thread is created when the IO thread is created.
+    if (!created_io_thread_)
+      CreateIOThread();
+    return background_x11_thread_.get();
+  }
+#endif
+
   virtual ProfileManager* profile_manager() {
     DCHECK(CalledOnValidThread());
     if (!created_profile_manager_)
       CreateProfileManager();
     return profile_manager_.get();
   }
 
   virtual PrefService* local_state() {
     DCHECK(CalledOnValidThread());
     if (!created_local_state_)
@@ skipping 118 matching lines @@
   void InitBrokerServices(sandbox::BrokerServices* broker_services);
 
   bool created_resource_dispatcher_host_;
   scoped_ptr<ResourceDispatcherHost> resource_dispatcher_host_;
 
   bool created_metrics_service_;
   scoped_ptr<MetricsService> metrics_service_;
 
   bool created_io_thread_;
   scoped_ptr<base::Thread> io_thread_;
+#if defined(OS_LINUX)
+  // This shares a created flag with the IO thread.
+  scoped_ptr<base::Thread> background_x11_thread_;
+#endif
 
   bool created_file_thread_;
   scoped_ptr<base::Thread> file_thread_;
 
   bool created_db_thread_;
   scoped_ptr<base::Thread> db_thread_;
 
   bool created_profile_manager_;
   scoped_ptr<ProfileManager> profile_manager_;
 
@@ skipping 34 matching lines @@
   bool checked_for_new_frames_;
   bool using_new_frames_;
 
   // An event that notifies when we are shutting-down.
   scoped_ptr<base::WaitableEvent> shutdown_event_;
 
   DISALLOW_EVIL_CONSTRUCTORS(BrowserProcessImpl);
 };
 
 #endif  // CHROME_BROWSER_BROWSER_PROCESS_IMPL_H__