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

chrome/browser/media_galleries/linux/mtp_device_task_helper.cc

Index: chrome/browser/media_galleries/linux/mtp_device_task_helper.cc
diff --git a/chrome/browser/media_galleries/linux/mtp_device_task_helper.cc b/chrome/browser/media_galleries/linux/mtp_device_task_helper.cc
index 20306e62739e17485b7eb93384fdfd4be7022576..afbe77a4223b9c19ad1745d61522510cb2f6564a 100644
--- a/chrome/browser/media_galleries/linux/mtp_device_task_helper.cc
+++ b/chrome/browser/media_galleries/linux/mtp_device_task_helper.cc
@@ -15,8 +15,6 @@
 #include "webkit/browser/fileapi/async_file_util.h"
 #include "webkit/common/fileapi/file_system_util.h"
 
-namespace chrome {
-
 namespace {
 
 // Does nothing.
@@ -182,5 +180,3 @@ void MTPDeviceTaskHelper::HandleDeviceError(
                                    FROM_HERE,
                                    base::Bind(error_callback, error));
 }
-
-}  // namespace chrome