Swap touch selection handles when they are interchanged

ui/touch_selection/touch_selection_controller_test_api.h

 // Copyright 2015 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.
 
 #ifndef UI_TOUCH_SELECTION_TOUCH_SELECTION_CONTROLLER_TEST_API_H_
 #define UI_TOUCH_SELECTION_TOUCH_SELECTION_CONTROLLER_TEST_API_H_
 
 #include "ui/touch_selection/touch_selection_controller.h"
 
 namespace ui {
 
 // Test api class to access internals of |ui::TouchSelectionController| in
 // tests.
 class TouchSelectionControllerTestApi {
  public:
   explicit TouchSelectionControllerTestApi(
       TouchSelectionController* controller);
   ~TouchSelectionControllerTestApi();
 
   bool GetStartVisible() const;
   bool GetEndVisible() const;
+  TouchHandleOrientation GetStartHandleOrientation() const;
+  TouchHandleOrientation GetEndHandleOrientation() const;
 
   bool temporarily_hidden() const { return controller_->temporarily_hidden_; }
 
  private:
   TouchSelectionController* const controller_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchSelectionControllerTestApi);
 };
 
 }  // namespace ui
 
 #endif  // UI_TOUCH_SELECTION_TOUCH_SELECTION_CONTROLLER_TEST_API_H_