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

chrome/browser/storage_monitor/test_volume_mount_watcher_win.cc

Index: chrome/browser/storage_monitor/test_volume_mount_watcher_win.cc
diff --git a/chrome/browser/storage_monitor/test_volume_mount_watcher_win.cc b/chrome/browser/storage_monitor/test_volume_mount_watcher_win.cc
index 937e08de01127efd083e2be80e44770c8ae2c75d..d63cfc596b54c7006ef56bf509ef086ad2bd026e 100644
--- a/chrome/browser/storage_monitor/test_volume_mount_watcher_win.cc
+++ b/chrome/browser/storage_monitor/test_volume_mount_watcher_win.cc
@@ -12,9 +12,6 @@
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/storage_monitor/storage_info.h"
 
-namespace chrome {
-namespace test {
-
 namespace {
 
 base::FilePath GetTempRoot() {
@@ -154,6 +151,3 @@ VolumeMountWatcherWin::GetAttachedDevicesCallbackType
 void TestVolumeMountWatcherWin::ShutdownWorkerPool() {
   device_info_worker_pool_->Shutdown();
 }
-
-}  // namespace test
-}  // namespace chrome