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

chrome/browser/media_galleries/imported_media_gallery_registry.h

Index: chrome/browser/media_galleries/imported_media_gallery_registry.h
diff --git a/chrome/browser/media_galleries/imported_media_gallery_registry.h b/chrome/browser/media_galleries/imported_media_gallery_registry.h
index 04fb682fc3ee7bd58145562747e8b7fb8df97f80..4929e5e68bc25ef92e11a2e31b0491d0fa3315cc 100644
--- a/chrome/browser/media_galleries/imported_media_gallery_registry.h
+++ b/chrome/browser/media_galleries/imported_media_gallery_registry.h
@@ -23,8 +23,6 @@ class PicasaDataProvider;
 class PicasaDataProviderTest;
 }
 
-namespace chrome {
-
 // This class lives on the MediaTaskRunner thread. It has some static
 // methods which are called on the UI thread.
 //
@@ -81,6 +79,4 @@ class ImportedMediaGalleryRegistry {
   DISALLOW_COPY_AND_ASSIGN(ImportedMediaGalleryRegistry);
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_IMPORTED_MEDIA_GALLERY_REGISTRY_H_