Consume entire touch sequence in touch selection controller

ui/touch_selection/touch_selection_controller.h

 // Copyright 2014 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_H_
 #define UI_TOUCH_SELECTION_TOUCH_SELECTION_CONTROLLER_H_
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "ui/gfx/geometry/point_f.h"
@@ skipping 132 matching lines @@
 
   bool insertion_active_or_requested() const {
     return activate_insertion_automatically_;
   }
 
  private:
   friend class TouchSelectionControllerTestApi;
 
   enum InputEventType { TAP, REPEATED_TAP, LONG_PRESS, INPUT_EVENT_TYPE_NONE };
 
+  bool WillHandleTouchEventImpl(const MotionEvent& event);
+
   // TouchHandleClient implementation.
   void OnDragBegin(const TouchSelectionDraggable& draggable,
                    const gfx::PointF& drag_position) override;
   void OnDragUpdate(const TouchSelectionDraggable& draggable,
                     const gfx::PointF& drag_position) override;
   void OnDragEnd(const TouchSelectionDraggable& draggable) override;
   bool IsWithinTapSlop(const gfx::Vector2dF& delta) const override;
   void OnHandleTapped(const TouchHandle& handle) override;
   void SetNeedsAnimate() override;
   std::unique_ptr<TouchHandleDrawable> CreateDrawable() override;
@@ skipping 70 matching lines @@
   // Longpress drag allows direct manipulation of longpress-initiated selection.
   LongPressDragSelector longpress_drag_selector_;
 
   gfx::RectF viewport_rect_;
 
   base::TimeTicks selection_start_time_;
   // Whether a selection handle was dragged during the current 'selection
   // session' - i.e. since the current selection has been activated.
   bool selection_handle_dragged_;
 
+  // Determines whether the entire touch sequence should be consumed or not.
+  bool consume_touch_sequence_;
+
   DISALLOW_COPY_AND_ASSIGN(TouchSelectionController);
 };
 
 }  // namespace ui
 
 #endif  // UI_TOUCH_SELECTION_TOUCH_SELECTION_CONTROLLER_H_