Remove old Aura Gesture Detection Pipeline.

ui/events/gesture_detection/motion_event.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_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_
 #define UI_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "ui/events/gesture_detection/gesture_detection_export.h"
@@ skipping 22 matching lines @@
   };
 
   enum ButtonType {
     BUTTON_PRIMARY = 1 << 0,
     BUTTON_SECONDARY = 1 << 1,
     BUTTON_TERTIARY = 1 << 2,
     BUTTON_BACK = 1 << 3,
     BUTTON_FORWARD = 1 << 4,
   };
 
-  // The implementer promises that |GetPointerId()| will never exceed this.
-  enum { MAX_POINTER_ID = 31 };
+  // The implementer promises that |GetPointerId()| will never exceed
+  // MAX_POINTER_ID.
+  enum { MAX_POINTER_ID = 31, MAX_TOUCH_POINT_COUNT = 12 };
 
   virtual ~MotionEvent() {}
 
   virtual int GetId() const = 0;
   virtual Action GetAction() const = 0;
   // Only valid if |GetAction()| returns ACTION_POINTER_UP or
   // ACTION_POINTER_DOWN.
   virtual int GetActionIndex() const = 0;
   virtual size_t GetPointerCount() const = 0;
   virtual int GetPointerId(size_t pointer_index) const = 0;
@@ skipping 36 matching lines @@
 };
 
 GESTURE_DETECTION_EXPORT bool operator==(const MotionEvent& lhs,
                                          const MotionEvent& rhs);
 GESTURE_DETECTION_EXPORT bool operator!=(const MotionEvent& lhs,
                                          const MotionEvent& rhs);
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_