Android mouse events shouldn't appear as TouchEvents

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 <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/time/time.h"
 #include "ui/events/gesture_detection/gesture_detection_export.h"
 
 namespace ui {
 
 // Abstract class for a generic motion-related event, patterned after that
 // subset of Android's MotionEvent API used in gesture detection.
 class GESTURE_DETECTION_EXPORT MotionEvent {
  public:
   enum Action {
     ACTION_NONE,
     ACTION_DOWN,
     ACTION_UP,
     ACTION_MOVE,
     ACTION_CANCEL,
     ACTION_POINTER_DOWN,
     ACTION_POINTER_UP,
+    ACTION_HOVER_ENTER,
+    ACTION_HOVER_EXIT,
+    ACTION_HOVER_MOVE,
+    ACTION_BUTTON_PRESS,
+    ACTION_BUTTON_RELEASE
   };
 
   enum ToolType {
     TOOL_TYPE_UNKNOWN,
     TOOL_TYPE_FINGER,
     TOOL_TYPE_STYLUS,
     TOOL_TYPE_MOUSE,
     TOOL_TYPE_ERASER
   };
 
@@ skipping 78 matching lines @@
   // They guarantee only that the returned type will reflect the same
   // data exposed by the MotionEvent interface; no guarantees are made that the
   // underlying implementation is identical to the source implementation.
   std::unique_ptr<MotionEvent> Clone() const;
   std::unique_ptr<MotionEvent> Cancel() const;
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_