Eliminate ash::internal namespace

ash/wm/resize_shadow_and_cursor_unittest.cc

Index: ash/wm/resize_shadow_and_cursor_unittest.cc
diff --git a/ash/wm/resize_shadow_and_cursor_unittest.cc b/ash/wm/resize_shadow_and_cursor_unittest.cc
index 6431409725aa7c448c2d0fc3d795037e4ec595fd..0503a825305023030fe30851973fd9cd2d3911d2 100644
--- a/ash/wm/resize_shadow_and_cursor_unittest.cc
+++ b/ash/wm/resize_shadow_and_cursor_unittest.cc
@@ -74,9 +74,9 @@ class ResizeShadowAndCursorTest : public AshTestBase {
   // Returns the hit test code if there is a resize shadow. Returns HTNOWHERE if
   // there is no resize shadow.
   int ResizeShadowHitTest() const {
-    ash::internal::ResizeShadow* resize_shadow =
-        ash::Shell::GetInstance()->resize_shadow_controller()->
-            GetShadowForWindowForTest(window_);
+    ash::ResizeShadow* resize_shadow = ash::Shell::GetInstance()
+                                           ->resize_shadow_controller()
+                                           ->GetShadowForWindowForTest(window_);
     return resize_shadow ? resize_shadow->GetLastHitTestForTest() : HTNOWHERE;
   }