Send pointerleave and pointerenter events for styluses on Mac

content/browser/renderer_host/render_widget_host_view_mac.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 #include <IOSurface/IOSurface.h>
 #include <stddef.h>
@@ skipping 152 matching lines @@
   // |gestureBeginEvent_|. If set, a GesturePinchEnd will be sent when the
   // gesture ends.
   BOOL gestureBeginPinchSent_;
 
   // If true then escape key down events are suppressed until the first escape
   // key up event. (The up event is suppressed as well). This is used by the
   // flash fullscreen code to avoid sending a key up event without a matching
   // key down event.
   BOOL suppressNextEscapeKeyUp_;
 
+  // This is used to indicate if a stylus is currently in the proximity of the
+  // tablet.
+  bool isStylusEnteringProximity_;
+  blink::WebPointerProperties::PointerType pointerType_;
+
   // The set of key codes from key down events that we haven't seen the matching
   // key up events yet.
   // Used for filtering out non-matching NSKeyUp events.
   std::set<unsigned short> keyDownCodes_;
 
   // The filter used to guide touch events towards a horizontal or vertical
   // orientation.
   content::MouseWheelRailsFilterMac mouseWheelFilter_;
 }
 
@@ skipping 375 matching lines @@
 
   // Factory used to safely scope delayed calls to ShutdownHost().
   base::WeakPtrFactory<RenderWidgetHostViewMac> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_