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

chrome/browser/media_galleries/linux/snapshot_file_details.h

Index: chrome/browser/media_galleries/linux/snapshot_file_details.h
diff --git a/chrome/browser/media_galleries/linux/snapshot_file_details.h b/chrome/browser/media_galleries/linux/snapshot_file_details.h
index e358b39493764877164d58c2ad7f36859a0d4f28..4d3fc5286fcdb6267fef3818af3c895b523e73bd 100644
--- a/chrome/browser/media_galleries/linux/snapshot_file_details.h
+++ b/chrome/browser/media_galleries/linux/snapshot_file_details.h
@@ -13,8 +13,6 @@
 #include "base/platform_file.h"
 #include "chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h"
 
-namespace chrome {
-
 // Used to represent snapshot file request params.
 struct SnapshotRequestInfo {
   SnapshotRequestInfo(
@@ -111,6 +109,4 @@ class SnapshotFileDetails {
   DISALLOW_COPY_AND_ASSIGN(SnapshotFileDetails);
 };
 
-}  // namespace chrome
-
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_LINUX_SNAPSHOT_FILE_DETAILS_H_