Extract content dependency from keyboard code

ash/wm/always_on_top_controller_unittest.cc

 // Copyright 2014 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/wm/always_on_top_controller.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/workspace/workspace_layout_manager.h"
 #include "base/command_line.h"
 #include "ui/keyboard/keyboard_controller.h"
-#include "ui/keyboard/keyboard_controller_proxy.h"
 #include "ui/keyboard/keyboard_switches.h"
+#include "ui/keyboard/keyboard_ui.h"
 #include "ui/keyboard/keyboard_util.h"
 
 namespace ash {
 namespace test {
 
 class VirtualKeyboardAlwaysOnTopControllerTest : public AshTestBase {
  public:
   VirtualKeyboardAlwaysOnTopControllerTest() {}
   ~VirtualKeyboardAlwaysOnTopControllerTest() override {}
 
@@ skipping 41 matching lines @@
       controller->always_on_top_controller();
   always_on_top_controller->SetLayoutManagerForTest(manager);
   // Activate keyboard. This triggers keyboard listeners to be registered.
   controller->ActivateKeyboard(keyboard_controller);
 
   // Mock a keyboard appearing.
   aura::Window* keyboard_container =
       Shell::GetContainer(root_window, kShellWindowId_VirtualKeyboardContainer);
   ASSERT_TRUE(keyboard_container);
   keyboard_container->Show();
-  keyboard::KeyboardControllerProxy* proxy = keyboard_controller->proxy();
-  aura::Window* keyboard_window = proxy->GetKeyboardWindow();
+  aura::Window* keyboard_window =
+      keyboard_controller->ui()->GetKeyboardWindow();
   keyboard_container->AddChild(keyboard_window);
   keyboard_window->set_owned_by_parent(false);
   const int kKeyboardHeight = 200;
   gfx::Rect keyboard_bounds = keyboard::FullWidthKeyboardBoundsFromRootBounds(
       root_window->bounds(), kKeyboardHeight);
   keyboard_window->SetBounds(keyboard_bounds);
   keyboard_window->Show();
   keyboard_controller->NotifyKeyboardBoundsChanging(keyboard_bounds);
   // Verify that test manager was notified of bounds change.
   ASSERT_TRUE(manager->keyboard_bounds_changed());
 }
 
 }  // namespace test
 }  // namespace ash