Eliminate ash::internal namespace

ash/drag_drop/drag_drop_tracker_unittest.cc

Index: ash/drag_drop/drag_drop_tracker_unittest.cc
diff --git a/ash/drag_drop/drag_drop_tracker_unittest.cc b/ash/drag_drop/drag_drop_tracker_unittest.cc
index dbac80ecc47ac1892950092177d4fed720749494..6b470e89c544b0ef5d3f34e127dd31ad04cd6087 100644
--- a/ash/drag_drop/drag_drop_tracker_unittest.cc
+++ b/ash/drag_drop/drag_drop_tracker_unittest.cc
@@ -31,9 +31,8 @@ class DragDropTrackerTest : public test::AshTestBase {
   }
 
   static aura::Window* GetTarget(const gfx::Point& location) {
-    scoped_ptr<internal::DragDropTracker> tracker(
-        new internal::DragDropTracker(Shell::GetPrimaryRootWindow(),
-                                      NULL));
+    scoped_ptr<DragDropTracker> tracker(
+        new DragDropTracker(Shell::GetPrimaryRootWindow(), NULL));
     ui::MouseEvent e(ui::ET_MOUSE_DRAGGED,
                      location,
                      location,
@@ -45,9 +44,8 @@ class DragDropTrackerTest : public test::AshTestBase {
 
   static ui::LocatedEvent* ConvertEvent(aura::Window* target,
                                            const ui::MouseEvent& event) {
-    scoped_ptr<internal::DragDropTracker> tracker(
-        new internal::DragDropTracker(Shell::GetPrimaryRootWindow(),
-                                      NULL));
+    scoped_ptr<DragDropTracker> tracker(
+        new DragDropTracker(Shell::GetPrimaryRootWindow(), NULL));
     ui::LocatedEvent* converted = tracker->ConvertEvent(target, event);
     return converted;
   }