Isolated FS for media devices.

chrome/browser/intents/device_attached_intent_source.h

Index: chrome/browser/intents/device_attached_intent_source.h
diff --git a/chrome/browser/intents/device_attached_intent_source.h b/chrome/browser/intents/device_attached_intent_source.h
index 96fd51caa5c3a458ad63c085a42be1fb76847d3a..f8c914c0b4988e5ae7f8541ec5b9e35e3cf5e05e 100644
--- a/chrome/browser/intents/device_attached_intent_source.h
+++ b/chrome/browser/intents/device_attached_intent_source.h
@@ -33,11 +33,16 @@ class DeviceAttachedIntentSource
       const string16& name,
       base::SystemMonitor::MediaDeviceType type,
       const FilePath::StringType& location) OVERRIDE;
+  virtual void OnMediaDeviceDetached(const std::string& id) OVERRIDE;
 
  private:
+  typedef std::map<std::string, base::SystemMonitor::MediaDeviceInfo>
+      DeviceIdToInfoMap;
+
   // Weak pointer to browser to which intents will be dispatched.
   Browser* browser_;
   content::WebContentsDelegate* delegate_;
+  DeviceIdToInfoMap device_id_map_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceAttachedIntentSource);
 };