Move wm/core to wm namespace.

ui/wm/core/transient_window_controller.h

Index: ui/wm/core/transient_window_controller.h
diff --git a/ui/wm/core/transient_window_controller.h b/ui/wm/core/transient_window_controller.h
index 01a8de2f9ea11370dc80e55da0d096ec015e6ef1..598904e8f0562bf0f1bfc235ba88d3afdf573f20 100644
--- a/ui/wm/core/transient_window_controller.h
+++ b/ui/wm/core/transient_window_controller.h
@@ -8,8 +8,7 @@
 #include "ui/aura/client/transient_window_client.h"
 #include "ui/wm/core/wm_core_export.h"
 
-namespace views {
-namespace corewm {
+namespace wm {
 
 // TransientWindowClient implementation. Uses TransientWindowManager to handle
 // tracking transient per window.
@@ -32,7 +31,6 @@ class WM_CORE_EXPORT TransientWindowController
   DISALLOW_COPY_AND_ASSIGN(TransientWindowController);
 };
 
-}  // namespace corewm
-}  // namespace views
+}  // namespace wm
 
 #endif  // UI_WM_CORE_TRANSIENT_WINDOW_CONTROLLER_H_