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

chrome/browser/media_galleries/win/snapshot_file_details.h

Index: chrome/browser/media_galleries/win/snapshot_file_details.h
diff --git a/chrome/browser/media_galleries/win/snapshot_file_details.h b/chrome/browser/media_galleries/win/snapshot_file_details.h
index 7c39ea3798e168387cb1580bf67bc1fe5525bdb7..f9e4dbaddd8e22035d81527acdc2e65d50fa0aaa 100644
--- a/chrome/browser/media_galleries/win/snapshot_file_details.h
+++ b/chrome/browser/media_galleries/win/snapshot_file_details.h
@@ -10,8 +10,6 @@
 #include "base/win/scoped_comptr.h"
 #include "chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h"
 
-namespace chrome {
-
 // Structure used to represent snapshot file request params.
 struct SnapshotRequestInfo {
   SnapshotRequestInfo(
@@ -92,6 +90,4 @@ class SnapshotFileDetails {
   DWORD bytes_written_;
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_WIN_SNAPSHOT_FILE_DETAILS_H_