Remove some pass-thrus on RootWindow API in favor of exposing the RootWindowHost again.

ui/aura/test/ui_controls_factory_aurawin.cc

Index: ui/aura/test/ui_controls_factory_aurawin.cc
diff --git a/ui/aura/test/ui_controls_factory_aurawin.cc b/ui/aura/test/ui_controls_factory_aurawin.cc
index 86f2d10349af73df69f240a722df3a288f02d62b..a9a2a8bdc5aed3139f65c916a3f1427385b7b082 100644
--- a/ui/aura/test/ui_controls_factory_aurawin.cc
+++ b/ui/aura/test/ui_controls_factory_aurawin.cc
@@ -37,7 +37,8 @@ class UIControlsWin : public UIControlsAura {
                             bool alt,
                             bool command) {
     DCHECK(!command);  // No command key on Aura
-    HWND window = native_window->GetDispatcher()->GetAcceleratedWidget();
+    HWND window =
+        native_window->GetDispatcher()->host()->GetAcceleratedWidget();
     return SendKeyPressImpl(
         window, key, control, shift, alt, base::Closure());
   }
@@ -49,7 +50,8 @@ class UIControlsWin : public UIControlsAura {
                                           bool command,
                                           const base::Closure& task) {
     DCHECK(!command);  // No command key on Aura
-    HWND window = native_window->GetDispatcher()->GetAcceleratedWidget();
+    HWND window =
+        native_window->GetDispatcher()->host()->GetAcceleratedWidget();
     return SendKeyPressImpl(window, key, control, shift, alt, task);
   }
   virtual bool SendMouseMove(long x, long y) {