Isolated FS for media devices.

chrome/browser/intents/device_attached_intent_source.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_INTENTS_DEVICE_ATTACHED_INTENT_SOURCE_H_
 #define CHROME_BROWSER_INTENTS_DEVICE_ATTACHED_INTENT_SOURCE_H_
 
 #include "base/system_monitor/system_monitor.h"
 
 class Browser;
@@ skipping 15 matching lines @@
   DeviceAttachedIntentSource(Browser* browser,
                              content::WebContentsDelegate* delegate);
   virtual ~DeviceAttachedIntentSource();
 
   // base::SystemMonitor::DevicesChangedObserver implementation.
   virtual void OnMediaDeviceAttached(
       const std::string& id,
       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;

[kmadhusu, 2012/08/01 23:39:35]

thestig@:  Since the detach notification didn't have the necessary information,
I have to maintain this map here :(. Lets discuss tomorrow, if we can do better.

+
   // Weak pointer to browser to which intents will be dispatched.
   Browser* browser_;
   content::WebContentsDelegate* delegate_;
+  DeviceIdToInfoMap device_id_map_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceAttachedIntentSource);
 };
 
 #endif  // CHROME_BROWSER_INTENTS_DEVICE_ATTACHED_INTENT_SOURCE_H_