[Media Galleries] Move RemovableStorageInfo notifications to chrome namespace (part 2)

chrome/browser/media_gallery/media_galleries_dialog_controller.cc

Index: chrome/browser/media_gallery/media_galleries_dialog_controller.cc
diff --git a/chrome/browser/media_gallery/media_galleries_dialog_controller.cc b/chrome/browser/media_gallery/media_galleries_dialog_controller.cc
index a5aabbbce25a7a96992e94257fcb7aa12dc8e251..c950a17fc78d7733a7d321d6e879c014d739bfb3 100644
--- a/chrome/browser/media_gallery/media_galleries_dialog_controller.cc
+++ b/chrome/browser/media_gallery/media_galleries_dialog_controller.cc
@@ -28,8 +28,9 @@ bool IsAttachedDevice(const std::string& device_id) {
   if (!MediaStorageUtil::IsRemovableDevice(device_id))
     return false;
 
-  std::vector<base::SystemMonitor::RemovableStorageInfo> removable_storages =
-      base::SystemMonitor::Get()->GetAttachedRemovableStorage();
+  std::vector<RemovableStorageNotifications::RemovableStorageInfo>
+      removable_storages = RemovableStorageNotifications::GetInstance()->
+          GetAttachedRemovableStorage();
   for (size_t i = 0; i < removable_storages.size(); ++i) {
     if (removable_storages[i].device_id == device_id)
       return true;
@@ -54,9 +55,10 @@ MediaGalleriesDialogController::MediaGalleriesDialogController(
 
   dialog_.reset(MediaGalleriesDialog::Create(this));
 
-  base::SystemMonitor* monitor = base::SystemMonitor::Get();
-  if (monitor)
-    monitor->AddDevicesChangedObserver(this);
+  RemovableStorageNotifications* notifications =
+      RemovableStorageNotifications::GetInstance();
+  if (notifications)
+    notifications->AddRemovableStorageObserver(this);
 }
 
 MediaGalleriesDialogController::MediaGalleriesDialogController()
@@ -65,9 +67,10 @@ MediaGalleriesDialogController::MediaGalleriesDialogController()
       preferences_(NULL) {}
 
 MediaGalleriesDialogController::~MediaGalleriesDialogController() {
-  base::SystemMonitor* monitor = base::SystemMonitor::Get();
-  if (monitor)
-    monitor->RemoveDevicesChangedObserver(this);
+  RemovableStorageNotifications* notifications =
+      RemovableStorageNotifications::GetInstance();
+  if (notifications)
+    notifications->RemoveRemovableStorageObserver(this);
 
   if (select_folder_dialog_.get())
     select_folder_dialog_->ListenerDestroyed();