Move wm/core to wm namespace.

ui/wm/core/focus_controller.cc

Index: ui/wm/core/focus_controller.cc
diff --git a/ui/wm/core/focus_controller.cc b/ui/wm/core/focus_controller.cc
index 197e04ac120363379c6510cf60c765320a4ef01f..c4e67cf6d072debd8da28adb34fb598b7de1ed4e 100644
--- a/ui/wm/core/focus_controller.cc
+++ b/ui/wm/core/focus_controller.cc
@@ -15,8 +15,7 @@
 #include "ui/wm/core/focus_rules.h"
 #include "ui/wm/core/window_util.h"
 
-namespace views {
-namespace corewm {
+namespace wm {
 namespace {
 
 // When a modal window is activated, we bring its entire transient parent chain
@@ -26,10 +25,10 @@ void StackTransientParentsBelowModalWindow(aura::Window* window) {
   if (window->GetProperty(aura::client::kModalKey) != ui::MODAL_TYPE_WINDOW)
     return;
 
-  aura::Window* transient_parent = views::corewm::GetTransientParent(window);
+  aura::Window* transient_parent = wm::GetTransientParent(window);
   while (transient_parent) {
     transient_parent->parent()->StackChildAtTop(transient_parent);
-    transient_parent = views::corewm::GetTransientParent(transient_parent);
+    transient_parent = wm::GetTransientParent(transient_parent);
   }
 }
 
@@ -375,5 +374,4 @@ void FocusController::WindowFocusedFromInputEvent(aura::Window* window) {
     FocusWindow(window);
 }
 
-}  // namespace corewm
-}  // namespace views
+}  // namespace wm