Full-screen Magnifier: Support warping the cursor on the edge

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 400 matching lines @@
   // TODO(oshima): Move as many controllers before creating
   // RootWindowController as possible.
   stacking_controller_.reset(new internal::StackingController);
   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());
+
   if (internal::MonitorController::IsExtendedDesktopEnabled()) {
     mouse_cursor_filter_.reset(
         new internal::MouseCursorEventFilter(monitor_controller_.get()));
     AddEnvEventFilter(mouse_cursor_filter_.get());
   }
 
-  magnification_controller_.reset(new internal::MagnificationController);
   high_contrast_controller_.reset(new HighContrastController);
   video_detector_.reset(new VideoDetector);
   window_cycle_controller_.reset(new WindowCycleController);
 
   InitRootWindowController(root_window_controller);
 
   // Initialize Primary RootWindow specific items.
   status_area_widget_ = new internal::StatusAreaWidget();
   status_area_widget_->CreateTrayViews(delegate_.get());
   status_area_widget_->Show();
@@ skipping 304 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