[Win, MediaGallery] Enumerate and handle mtp device attach/detach events.

chrome/browser/system_monitor/removable_device_notifications_window_win.h

Index: chrome/browser/system_monitor/removable_device_notifications_window_win.h
diff --git a/chrome/browser/system_monitor/removable_device_notifications_window_win.h b/chrome/browser/system_monitor/removable_device_notifications_window_win.h
index 173e7ec56287dca09d87a73df7d08f8d2a8195c9..ed6dccd36d1e701e865532c0c2dac4ab0adc7e53 100644
--- a/chrome/browser/system_monitor/removable_device_notifications_window_win.h
+++ b/chrome/browser/system_monitor/removable_device_notifications_window_win.h
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/system_monitor/system_monitor.h"
+#include "chrome/browser/system_monitor/portable_device_watcher_win.h"
 #include "chrome/browser/system_monitor/volume_mount_watcher_win.h"
 
 class FilePath;
@@ -42,8 +43,9 @@ class RemovableDeviceNotificationsWindowWin {
  private:
   friend class TestRemovableDeviceNotificationsWindowWin;
 
-  explicit RemovableDeviceNotificationsWindowWin(
-      VolumeMountWatcherWin* volume_mount_watcher);
+  RemovableDeviceNotificationsWindowWin(
+      VolumeMountWatcherWin* volume_mount_watcher,
+      PortableDeviceWatcherWin* portable_device_watcher);
 
   // Gets the removable storage information given a |device_path|. On success,
   // returns true and fills in |device_location|, |unique_id|, |name| and
@@ -72,6 +74,9 @@ class RemovableDeviceNotificationsWindowWin {
   // Store the volume mount point watcher to manage the mounted devices.
   scoped_refptr<VolumeMountWatcherWin> volume_mount_watcher_;
 
+  // Store the portable device watcher to manage mtp devices.
+  scoped_refptr<PortableDeviceWatcherWin> portable_device_watcher_;
+
   DISALLOW_COPY_AND_ASSIGN(RemovableDeviceNotificationsWindowWin);
 };