Moves maintaining root_window_for_new_windows_ to Shell

ash/test/ui_controls_factory_ash.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/common/wm/root_window_finder.h"
 #include "ash/common/wm_window.h"
 #include "ash/shell.h"
 #include "ash/wm/window_properties.h"
 #include "ui/aura/client/capture_client.h"
 #include "ui/aura/client/screen_position_client.h"
@@ skipping 55 matching lines @@
                                       base::Closure());
   }
 
   bool SendKeyPressNotifyWhenDone(gfx::NativeWindow window,
                                   ui::KeyboardCode key,
                                   bool control,
                                   bool shift,
                                   bool alt,
                                   bool command,
                                   const base::Closure& closure) override {
-    aura::Window* root =
-        window ? window->GetRootWindow() : ash::Shell::GetTargetRootWindow();
+    aura::Window* root = window ? window->GetRootWindow()
+                                : ash::Shell::GetRootWindowForNewWindows();
     UIControlsAura* ui_controls = GetUIControlsForRootWindow(root);
     return ui_controls &&
            ui_controls->SendKeyPressNotifyWhenDone(window, key, control, shift,
                                                    alt, command, closure);
   }
 
   bool SendMouseMove(long x, long y) override {
     gfx::Point p(x, y);
     UIControlsAura* ui_controls = GetUIControlsAt(p);
     return ui_controls && ui_controls->SendMouseMove(p.x(), p.y());
@@ skipping 25 matching lines @@
 
   bool SendMouseClick(MouseButton type) override {
     gfx::Point p(display::Screen::GetScreen()->GetCursorScreenPoint());
     UIControlsAura* ui_controls = GetUIControlsAt(p);
     return ui_controls && ui_controls->SendMouseClick(type);
   }
 
   void RunClosureAfterAllPendingUIEvents(
       const base::Closure& closure) override {
     UIControlsAura* ui_controls =
-        GetUIControlsForRootWindow(ash::Shell::GetTargetRootWindow());
+        GetUIControlsForRootWindow(ash::Shell::GetRootWindowForNewWindows());
     if (ui_controls)
       ui_controls->RunClosureAfterAllPendingUIEvents(closure);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(UIControlsAsh);
 };
 
 ui_controls::UIControlsAura* CreateAshUIControls() {
   return new ash::test::UIControlsAsh();
 }
 
 }  // namespace test
 }  // namespace ash