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

chrome/browser/storage_monitor/removable_device_constants.h

Index: chrome/browser/storage_monitor/removable_device_constants.h
diff --git a/chrome/browser/storage_monitor/removable_device_constants.h b/chrome/browser/storage_monitor/removable_device_constants.h
index c63587a4257c39d01e19a14a842342093b211319..a7d9363fc448a65e74c581e60127bad612524dad 100644
--- a/chrome/browser/storage_monitor/removable_device_constants.h
+++ b/chrome/browser/storage_monitor/removable_device_constants.h
@@ -9,8 +9,6 @@
 #include "base/strings/string16.h"
 #include "build/build_config.h"
 
-namespace chrome {
-
 // Prefix constants used in device unique id.
 extern const char kFSUniqueIdPrefix[];
 extern const char kVendorModelSerialPrefix[];
@@ -26,6 +24,4 @@ extern const char16 kWPDDevInterfaceGUID[];
 
 extern const base::FilePath::CharType kDCIMDirectoryName[];
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_STORAGE_MONITOR_REMOVABLE_DEVICE_CONSTANTS_H_