Only exclude workarea from touch-exploration with active shell-surface

ui/chromeos/touch_exploration_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_CHROMEOS_TOUCH_EXPLORATION_CONTROLLER_H_
 #define UI_CHROMEOS_TOUCH_EXPLORATION_CONTROLLER_H_
 
 #include "base/macros.h"
 #include "base/timer/timer.h"
 #include "base/values.h"
@@ skipping 171 matching lines @@
   explicit TouchExplorationController(
       aura::Window* root_window,
       ui::TouchExplorationControllerDelegate* delegate);
   ~TouchExplorationController() override;
 
   // Make synthesized touch events are anchored at this point. This is
   // called when the object with accessibility focus is updated via something
   // other than touch exploration.
   void SetTouchAccessibilityAnchorPoint(const gfx::Point& anchor_point);
 
+  // Events within the exclude bounds will not be rewritten.
+  // |bounds| are in root window coordinates.
+  void SetExcludeBounds(const gfx::Rect& bounds);
+
  private:
   friend class TouchExplorationControllerTestApi;
 
   // Overridden from ui::EventRewriter
   ui::EventRewriteStatus RewriteEvent(
       const ui::Event& event,
       std::unique_ptr<ui::Event>* rewritten_event) override;
   ui::EventRewriteStatus NextDispatchEvent(
       const ui::Event& last_event,
       std::unique_ptr<ui::Event>* new_event) override;
@@ skipping 291 matching lines @@
 
   // The previous state entered.
   State prev_state_;
 
   // A copy of the previous event passed.
   std::unique_ptr<ui::TouchEvent> prev_event_;
 
   // This toggles whether VLOGS are turned on or not.
   bool VLOG_on_;
 
+  // LocatedEvents within this area should be left alone.
+  gfx::Rect exclude_bounds_;
+
   DISALLOW_COPY_AND_ASSIGN(TouchExplorationController);
 };
 
 }  // namespace ui
 
 #endif  // UI_CHROMEOS_TOUCH_EXPLORATION_CONTROLLER_H_