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

ash/shell.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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/accelerators/focus_manager_factory.h"
@@ skipping 59 matching lines @@
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/leak_annotations.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/stacking_client.h"
 #include "ui/aura/client/user_action_client.h"
 #include "ui/aura/env.h"
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/root_window.h"
-#include "ui/aura/ui_controls_aura.h"
 #include "ui/aura/window.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/size.h"
-#include "ui/ui_controls/ui_controls.h"
 #include "ui/views/corewm/compound_event_filter.h"
 #include "ui/views/corewm/corewm_switches.h"
 #include "ui/views/corewm/focus_controller.h"
 #include "ui/views/corewm/input_method_event_filter.h"
 #include "ui/views/corewm/shadow_controller.h"
 #include "ui/views/corewm/visibility_controller.h"
 #include "ui/views/corewm/window_modality_controller.h"
 #include "ui/views/focus/focus_manager_factory.h"
 #include "ui/views/widget/native_widget_aura.h"
 #include "ui/views/widget/widget.h"
@@ skipping 102 matching lines @@
           new internal::OutputConfiguratorAnimation()),
 #endif  // defined(OS_CHROMEOS)
       browser_context_(NULL),
       simulate_modal_window_open_for_testing_(false) {
   DCHECK(delegate_.get());
   display_manager_.reset(new internal::DisplayManager);
   ANNOTATE_LEAKING_OBJECT_PTR(screen_);  // see crbug.com/156466
   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_ALTERNATE, screen_);
   if (!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE))
     gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, screen_);
-  ui_controls::InstallUIControlsAura(internal::CreateUIControls());
 #if defined(OS_CHROMEOS)
   content::GpuFeatureType blacklisted_features =
       content::GpuDataManager::GetInstance()->GetBlacklistedFeatures();
   bool is_panel_fitting_disabled =
       (blacklisted_features & content::GPU_FEATURE_TYPE_PANEL_FITTING) ||
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kAshDisablePanelFitting);
   output_configurator_->Init(!is_panel_fitting_disabled);
 
   output_configurator_->AddObserver(output_configurator_animation_.get());
@@ skipping 703 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, aura::client::ActivationChangeObserver implementation:
 
 void Shell::OnWindowActivated(aura::Window* gained_active,
                               aura::Window* lost_active) {
   if (gained_active)
     active_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash