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

chrome/browser/media_galleries/media_galleries_test_util.h

Index: chrome/browser/media_galleries/media_galleries_test_util.h
diff --git a/chrome/browser/media_galleries/media_galleries_test_util.h b/chrome/browser/media_galleries/media_galleries_test_util.h
index d18f7225ad4ae9641fb0382da5cc1b0f0b9fc577..553dd088bc6bdaefdce438b70d13ad9ccb7e3951 100644
--- a/chrome/browser/media_galleries/media_galleries_test_util.h
+++ b/chrome/browser/media_galleries/media_galleries_test_util.h
@@ -17,8 +17,6 @@ class Extension;
 
 class Profile;
 
-namespace chrome {
-
 scoped_refptr<extensions::Extension> AddMediaGalleriesApp(
     const std::string& name,
     const std::vector<std::string>& media_galleries_permissions,
@@ -46,6 +44,4 @@ class EnsureMediaDirectoriesExists {
   DISALLOW_COPY_AND_ASSIGN(EnsureMediaDirectoriesExists);
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_TEST_UTIL_H_