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

chrome/browser/media_galleries/media_galleries_preferences.cc

Index: chrome/browser/media_galleries/media_galleries_preferences.cc
diff --git a/chrome/browser/media_galleries/media_galleries_preferences.cc b/chrome/browser/media_galleries/media_galleries_preferences.cc
index 804b269056e93d916e3e91fc14f3e6e4b27a948b..c4466ad43c61dfb383f9b2a8f5831f2cd4939e49 100644
--- a/chrome/browser/media_galleries/media_galleries_preferences.cc
+++ b/chrome/browser/media_galleries/media_galleries_preferences.cc
@@ -38,8 +38,6 @@ using base::DictionaryValue;
 using base::ListValue;
 using extensions::ExtensionPrefs;
 
-namespace chrome {
-
 namespace {
 
 // Pref key for the list of media gallery permissions.
@@ -367,9 +365,9 @@ void MediaGalleriesPreferences::AddDefaultGalleriesIfFreshProfile() {
 
   // Fresh profile case.
   const int kDirectoryKeys[] = {
-    DIR_USER_MUSIC,
-    DIR_USER_PICTURES,
-    DIR_USER_VIDEOS,
+    chrome::DIR_USER_MUSIC,
+    chrome::DIR_USER_PICTURES,
+    chrome::DIR_USER_VIDEOS,
   };
 
   for (size_t i = 0; i < arraysize(kDirectoryKeys); ++i) {
@@ -947,5 +945,3 @@ void MediaGalleriesPreferences::SetExtensionPrefsForTesting(
     extensions::ExtensionPrefs* extension_prefs) {
   extension_prefs_for_testing_ = extension_prefs;
 }
-
-}  // namespace chrome