Make ui_controls only usable from interactive_ui_tests. This has two benefits:

ui/views/widget/desktop_aura/desktop_root_window_host_win.cc

 // Copyright (c) 2012 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 "ui/views/widget/desktop_aura/desktop_root_window_host_win.h"
 
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/default_capture_client.h"
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/root_window.h"
-#include "ui/aura/ui_controls_aura.h"
 #include "ui/aura/window_property.h"
 #include "ui/base/cursor/cursor_loader_win.h"
 #include "ui/base/ime/input_method_win.h"
 #include "ui/base/win/shell.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/path_win.h"
 #include "ui/native_theme/native_theme_aura.h"
 #include "ui/native_theme/native_theme_win.h"
-#include "ui/ui_controls/ui_controls.h"
 #include "ui/views/corewm/compound_event_filter.h"
 #include "ui/views/corewm/input_method_event_filter.h"
 #include "ui/views/ime/input_method_bridge.h"
 #include "ui/views/widget/desktop_aura/desktop_activation_client.h"
 #include "ui/views/widget/desktop_aura/desktop_cursor_client.h"
 #include "ui/views/widget/desktop_aura/desktop_dispatcher_client.h"
 #include "ui/views/widget/desktop_aura/desktop_drag_drop_client_win.h"
 #include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
 #include "ui/views/widget/desktop_aura/desktop_screen_position_client.h"
 #include "ui/views/widget/root_view.h"
@@ skipping 105 matching lines @@
 
   desktop_native_widget_aura_->InstallInputMethodEventFilter(root_window_);
 
   drag_drop_client_.reset(new DesktopDragDropClientWin(root_window_,
                                                        GetHWND()));
   aura::client::SetDragDropClient(root_window_, drag_drop_client_.get());
 
   focus_client_->FocusWindow(content_window_);
   root_window_->SetProperty(kContentWindowForRootWindow, content_window_);
 
-  ui_controls::InstallUIControlsAura(CreateUIControlsAura(root_window_));
   return root_window_;
 }
 
 void DesktopRootWindowHostWin::Close() {
   message_handler_->Close();
 }
 
 void DesktopRootWindowHostWin::CloseNow() {
   message_handler_->CloseNow();
 }
@@ skipping 611 matching lines @@
 DesktopRootWindowHost* DesktopRootWindowHost::Create(
     internal::NativeWidgetDelegate* native_widget_delegate,
     DesktopNativeWidgetAura* desktop_native_widget_aura,
     const gfx::Rect& initial_bounds) {
   return new DesktopRootWindowHostWin(native_widget_delegate,
                                       desktop_native_widget_aura,
                                       initial_bounds);
 }
 
 }  // namespace views