Add SystemMonitor::GetMediaDevices()

chrome/browser/browser_process_impl.h

Index: chrome/browser/browser_process_impl.h
===================================================================
--- chrome/browser/browser_process_impl.h	(revision 137377)
+++ chrome/browser/browser_process_impl.h	(working copy)
@@ -30,6 +30,10 @@
 class RemoteDebuggingServer;
 class TabCloseableStateWatcher;
 
+namespace chrome {
+class MediaDeviceManager;
+}
+
 namespace policy {
 class BrowserPolicyConnector;
 class PolicyService;
@@ -113,7 +117,9 @@
   virtual prerender::PrerenderTracker* prerender_tracker() OVERRIDE;
   virtual ComponentUpdateService* component_updater() OVERRIDE;
   virtual CRLSetFetcher* crl_set_fetcher() OVERRIDE;
+  virtual chrome::MediaDeviceManager* media_device_manager() OVERRIDE;
 
+
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ -238,6 +244,9 @@
   // Monitors the state of the 'DisablePluginFinder' policy.
   scoped_ptr<BooleanPrefMember> plugin_finder_disabled_pref_;
 
+  // Keeps track of media device attachments/detechments.
+  scoped_ptr<chrome::MediaDeviceManager> media_device_manager_;
+
 #if (defined(OS_WIN) || defined(OS_LINUX)) && !defined(OS_CHROMEOS)
   base::RepeatingTimer<BrowserProcessImpl> autoupdate_timer_;