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

chrome/browser/media_galleries/linux/mtp_device_task_helper.h

Index: chrome/browser/media_galleries/linux/mtp_device_task_helper.h
diff --git a/chrome/browser/media_galleries/linux/mtp_device_task_helper.h b/chrome/browser/media_galleries/linux/mtp_device_task_helper.h
index e0be7985a05186b245274782e585eb938d0dc79e..c3ceb359c49628628bde0fc518997ac17b79287c 100644
--- a/chrome/browser/media_galleries/linux/mtp_device_task_helper.h
+++ b/chrome/browser/media_galleries/linux/mtp_device_task_helper.h
@@ -16,8 +16,6 @@
 #include "device/media_transfer_protocol/mtp_file_entry.pb.h"
 #include "webkit/browser/fileapi/async_file_util.h"
 
-namespace chrome {
-
 class MTPReadFileWorker;
 struct SnapshotRequestInfo;
 
@@ -151,6 +149,4 @@ class MTPDeviceTaskHelper {
   DISALLOW_COPY_AND_ASSIGN(MTPDeviceTaskHelper);
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_LINUX_MTP_DEVICE_TASK_HELPER_H_