Rename SystemMonitor's MediaDevice calls to RemovableStorage.

chrome/browser/media_gallery/media_file_system_registry.cc

Index: chrome/browser/media_gallery/media_file_system_registry.cc
===================================================================
--- chrome/browser/media_gallery/media_file_system_registry.cc	(revision 153336)
+++ chrome/browser/media_gallery/media_file_system_registry.cc	(working copy)
@@ -89,8 +89,8 @@
 
   // TODO(thestig) Handle overlap between devices and media directories.
   SystemMonitor* monitor = SystemMonitor::Get();
-  const std::vector<SystemMonitor::MediaDeviceInfo> media_devices =
-      monitor->GetAttachedMediaDevices();
+  const std::vector<SystemMonitor::RemovableStorageInfo> media_devices =
+      monitor->GetAttachedRemovableStorages();
   for (size_t i = 0; i < media_devices.size(); ++i) {
     MediaStorageUtil::Type type;
     MediaStorageUtil::CrackDeviceId(media_devices[i].unique_id, &type, NULL);
@@ -119,7 +119,8 @@
   return results;
 }
 
-void MediaFileSystemRegistry::OnMediaDeviceDetached(const std::string& id) {
+void MediaFileSystemRegistry::OnRemovableStorageDetached(
+    const std::string& id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   DeviceIdToInfoMap::iterator it = device_id_map_.find(id);