Add the partial screen magnifier to Chrome OS.

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"
 #include "ash/ash_switches.h"
 #include "ash/caps_lock_delegate_stub.h"
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/desktop_background/desktop_background_resources.h"
 #include "ash/desktop_background/desktop_background_view.h"
 #include "ash/display/display_controller.h"
 #include "ash/display/mouse_cursor_event_filter.h"
 #include "ash/display/multi_display_manager.h"
 #include "ash/display/screen_position_controller.h"
 #include "ash/display/secondary_display_view.h"
 #include "ash/drag_drop/drag_drop_controller.h"
 #include "ash/focus_cycler.h"
 #include "ash/high_contrast/high_contrast_controller.h"
 #include "ash/launcher/launcher.h"
 #include "ash/magnifier/magnification_controller.h"
+#include "ash/magnifier/partial_magnification_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_ash.h"
 #include "ash/shell_context_menu.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_factory.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/tooltips/tooltip_controller.h"
 #include "ash/touch/touch_observer_hud.h"
@@ skipping 46 matching lines @@
 #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/focus/focus_manager_factory.h"
 #include "ui/views/widget/native_widget_aura.h"
 #include "ui/views/widget/widget.h"
+#include "ui/views/widget/widget_delegate.h"
 
 #if !defined(OS_MACOSX)
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/accelerators/accelerator_filter.h"
 #include "ash/accelerators/nested_dispatcher_controller.h"
 #endif
 
 #if defined(OS_CHROMEOS)
 #include "ash/display/output_configurator_animation.h"
 #include "base/message_pump_aurax11.h"
@@ skipping 138 matching lines @@
   app_list_controller_.reset();
 
   // Destroy all child windows including widgets.
   display_controller_->CloseChildWindows();
 
   // These need a valid Shell instance to clean up properly, so explicitly
   // delete them before invalidating the instance.
   // Alphabetical.
   drag_drop_controller_.reset();
   magnification_controller_.reset();
+  partial_magnification_controller_.reset();
   power_button_controller_.reset();
   resize_shadow_controller_.reset();
   shadow_controller_.reset();
   tooltip_controller_.reset();
   window_cycle_controller_.reset();
   capture_controller_.reset();
   nested_dispatcher_controller_.reset();
   user_action_client_.reset();
   visibility_controller_.reset();
 
@@ skipping 170 matching lines @@
   visibility_controller_.reset(new internal::VisibilityController);
   drag_drop_controller_.reset(new internal::DragDropController);
   if (delegate_.get())
     user_action_client_.reset(delegate_->CreateUserActionClient());
   window_modality_controller_.reset(new internal::WindowModalityController);
   AddEnvEventFilter(window_modality_controller_.get());
 
   magnification_controller_.reset(
       internal::MagnificationController::CreateInstance());
 
+  partial_magnification_controller_.reset(
+      internal::PartialMagnificationController::CreateInstance());
+
   high_contrast_controller_.reset(new HighContrastController);
   video_detector_.reset(new VideoDetector);
   window_cycle_controller_.reset(
       new WindowCycleController(activation_controller_.get()));
 
   tooltip_controller_.reset(new internal::TooltipController(
       drag_drop_controller_.get()));
   AddEnvEventFilter(tooltip_controller_.get());
 
   InitRootWindowController(root_window_controller);
@@ skipping 309 matching lines @@
 }
 
 void Shell::ShowCursor(bool visible) {
   RootWindowList root_windows = GetAllRootWindows();
   for (RootWindowList::iterator iter = root_windows.begin();
        iter != root_windows.end(); ++iter)
     (*iter)->ShowCursor(visible);
 }
 
 }  // namespace ash