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

chrome/browser/storage_monitor/removable_storage_observer.h

Index: chrome/browser/storage_monitor/removable_storage_observer.h
diff --git a/chrome/browser/storage_monitor/removable_storage_observer.h b/chrome/browser/storage_monitor/removable_storage_observer.h
index 8590e21886692adce23327799544b308305d8945..b458684149b559f06e20e92f814770651d002399 100644
--- a/chrome/browser/storage_monitor/removable_storage_observer.h
+++ b/chrome/browser/storage_monitor/removable_storage_observer.h
@@ -7,8 +7,6 @@
 
 #include "chrome/browser/storage_monitor/storage_info.h"
 
-namespace chrome {
-
 // Clients use this class to register for event-based notifications of
 // removable storage devices attached to or removed from the system.
 class RemovableStorageObserver {
@@ -25,6 +23,4 @@ class RemovableStorageObserver {
   virtual ~RemovableStorageObserver() {}
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_STORAGE_MONITOR_REMOVABLE_STORAGE_OBSERVER_H_