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

chrome/browser/media_galleries/linux/mtp_read_file_worker.cc

Index: chrome/browser/media_galleries/linux/mtp_read_file_worker.cc
diff --git a/chrome/browser/media_galleries/linux/mtp_read_file_worker.cc b/chrome/browser/media_galleries/linux/mtp_read_file_worker.cc
index 29bea5df68464b802924f5f1c0ec77d77118010e..e9918931145a468b617a7ff55b972b147e8d54a9 100644
--- a/chrome/browser/media_galleries/linux/mtp_read_file_worker.cc
+++ b/chrome/browser/media_galleries/linux/mtp_read_file_worker.cc
@@ -16,8 +16,6 @@
 
 using content::BrowserThread;
 
-namespace chrome {
-
 namespace {
 
 // Appends |data| to the snapshot file specified by the |snapshot_file_path| on
@@ -140,5 +138,3 @@ void MTPReadFileWorker::OnDidWriteIntoSnapshotFile(
                  snapshot_file_details->file_info(),
                  snapshot_file_details->snapshot_file_path()));
 }
-
-}  // namespace chrome