Move wm/core to wm namespace.

ui/wm/core/base_focus_rules.h

Index: ui/wm/core/base_focus_rules.h
diff --git a/ui/wm/core/base_focus_rules.h b/ui/wm/core/base_focus_rules.h
index cfa0f9446af74dd66d0abe53e3f352beef3d530c..7195dad1e7f4ecee5f2c5725ad98d147713f2d01 100644
--- a/ui/wm/core/base_focus_rules.h
+++ b/ui/wm/core/base_focus_rules.h
@@ -9,8 +9,7 @@
 #include "base/compiler_specific.h"
 #include "ui/wm/core/focus_rules.h"
 
-namespace views {
-namespace corewm {
+namespace wm {
 
 // A set of basic focus and activation rules. Specializations should most likely
 // subclass this and call up to these methods rather than reimplementing them.
@@ -41,7 +40,6 @@ class WM_CORE_EXPORT BaseFocusRules : public FocusRules {
   DISALLOW_COPY_AND_ASSIGN(BaseFocusRules);
 };
 
-}  // namespace corewm
-}  // namespace views
+}  // namespace wm
 
 #endif  // UI_WM_CORE_BASE_FOCUS_RULES_H_