Move wm/core to wm namespace.

ui/wm/core/visibility_controller_unittest.cc

Index: ui/wm/core/visibility_controller_unittest.cc
diff --git a/ui/wm/core/visibility_controller_unittest.cc b/ui/wm/core/visibility_controller_unittest.cc
index 81e7978d2f173a2533f7f9279110866591f0173f..70d1386a138467f0fb85c3afcbe0f15305565109 100644
--- a/ui/wm/core/visibility_controller_unittest.cc
+++ b/ui/wm/core/visibility_controller_unittest.cc
@@ -14,8 +14,7 @@
 #include "ui/compositor/scoped_animation_duration_scale_mode.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 
-namespace views {
-namespace corewm {
+namespace wm {
 
 typedef aura::test::AuraTestBase VisibilityControllerTest;
 
@@ -91,5 +90,4 @@ TEST_F(VisibilityControllerTest, AnimateTransparencyToZeroAndHideHides) {
   EXPECT_FALSE(window->IsVisible());
 }
 
-}  // namespace corewm
-}  // namespace views
+}  // namespace wm