Cleanup: Remove chrome namespace for storage monitor and media galleries.

chrome/browser/storage_monitor/portable_device_watcher_win.h

Index: chrome/browser/storage_monitor/portable_device_watcher_win.h
diff --git a/chrome/browser/storage_monitor/portable_device_watcher_win.h b/chrome/browser/storage_monitor/portable_device_watcher_win.h
index 44cd80ecd5b5b3849a8fa4ce3d6ae775a14832de..3bb6ceebd15c594f7dfec3d65e534c42585a0fa5 100644
--- a/chrome/browser/storage_monitor/portable_device_watcher_win.h
+++ b/chrome/browser/storage_monitor/portable_device_watcher_win.h
@@ -20,11 +20,7 @@ namespace base {
 class SequencedTaskRunner;
 }
 
-namespace chrome {
-
-namespace test {
 class TestPortableDeviceWatcherWin;
-}
 
 // This class watches the portable device mount points and sends notifications
 // about the attached/detached media transfer protocol (MTP) devices.
@@ -98,7 +94,7 @@ class PortableDeviceWatcherWin {
                    base::Callback<void(StorageMonitor::EjectStatus)> callback);
 
  private:
-  friend class test::TestPortableDeviceWatcherWin;
+  friend class TestPortableDeviceWatcherWin;
 
   // Key: MTP device storage unique id.
   // Value: Metadata for the given storage.
@@ -143,6 +139,4 @@ class PortableDeviceWatcherWin {
   DISALLOW_COPY_AND_ASSIGN(PortableDeviceWatcherWin);
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_STORAGE_MONITOR_PORTABLE_DEVICE_WATCHER_WIN_H_