Isolated FS for media devices.

chrome/browser/media_gallery/media_file_system_registry.h

Index: chrome/browser/media_gallery/media_file_system_registry.h
diff --git a/chrome/browser/media_gallery/media_file_system_registry.h b/chrome/browser/media_gallery/media_file_system_registry.h
index e936a8b3e414460fbd88a489cdbd8de6ae35928a..2066f88f81a983e943bcfe7d64d347f0589e651e 100644
--- a/chrome/browser/media_gallery/media_file_system_registry.h
+++ b/chrome/browser/media_gallery/media_file_system_registry.h
@@ -52,7 +52,9 @@ class MediaFileSystemRegistry
       const extensions::Extension& extension);
 
   // base::SystemMonitor::DevicesChangedObserver implementation.
-  virtual void OnMediaDeviceDetached(const std::string& id) OVERRIDE;
+  virtual void OnMediaDeviceDetached(
+      const std::string& id,
+      const FilePath::StringType& location) OVERRIDE;
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
@@ -82,7 +84,9 @@ class MediaFileSystemRegistry
   void UnregisterForRPHGoneNotifications(const content::RenderProcessHost* rph);
 
   // Registers a path as a media file system and return the filesystem id.
-  std::string RegisterPathAsFileSystem(const FilePath& path);
+  std::string RegisterPathAsFileSystem(
+      const FilePath& path,
+      const base::SystemMonitor::MediaDeviceType& type);
 
   // Revoke a media file system with a given |path|.
   void RevokeMediaFileSystem(const FilePath& path);