Add DeviceMonitorLinux in BrowserMainLoop.

content/browser/browser_main_loop.h

Index: content/browser/browser_main_loop.h
===================================================================
--- content/browser/browser_main_loop.h	(revision 148913)
+++ content/browser/browser_main_loop.h	(working copy)
@@ -44,6 +44,7 @@
 class BrowserMainParts;
 class BrowserShutdownImpl;
 class BrowserThreadImpl;
+class DevicesMonitor;

[tommi (sloooow) - chröme, 2012/07/30 11:07:04]

"devices monitor" doesn't sound right.  Even though it can monitor multiple
devices, I think we should name it DeviceMonitor.

 struct MainFunctionParams;
 class ResourceDispatcherHostImpl;
 class WebKitThread;
@@ -77,6 +78,7 @@
   // Can be called on any thread.
   static media::AudioManager* GetAudioManager();
   static media_stream::MediaStreamManager* GetMediaStreamManager();
+  static content::DevicesMonitor* GetDevicesMonitor();

[tommi (sloooow) - chröme, 2012/07/30 11:07:04]

Why do we need this getter?

 
  private:
   // For ShutdownThreadsAndCleanUp.
@@ -106,6 +108,7 @@
 #if defined(OS_WIN)
   scoped_ptr<SystemMessageWindowWin> system_message_window_;
 #endif
+  scoped_ptr<DevicesMonitor> devices_monitor_;

[tommi (sloooow) - chröme, 2012/07/30 11:07:04]

should this be in an #else?  This is for posix what SystemMessageWindowWin is
for Windows, right?

 
   // Destroy parts_ before main_message_loop_ (required) and before other
   // classes constructed in content (but after main_thread_).