Propagate touch area to WebKit for GestureTapDown event

content/browser/renderer_host/web_input_event_aurax11.cc

 // 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.
 
 // Portions based heavily on:
 // third_party/WebKit/Source/WebKit/chromium/public/gtk/WebInputEventFactory.cpp
 //
 /*
  * Copyright (C) 2006-2011 Google Inc. All rights reserved.
  *
@@ skipping 336 matching lines @@
 
   switch (event->type()) {
     case ui::ET_GESTURE_TAP:
       gesture_event.type = WebKit::WebInputEvent::GestureTap;
       gesture_event.data.tap.tapCount = event->details().tap_count();
       gesture_event.data.tap.width = event->details().bounding_box().width();
       gesture_event.data.tap.height = event->details().bounding_box().height();
       break;
     case ui::ET_GESTURE_TAP_DOWN:
       gesture_event.type = WebKit::WebInputEvent::GestureTapDown;
+      gesture_event.data.tapDown.width =
+          event->details().bounding_box().width();
+      gesture_event.data.tapDown.height =
+          event->details().bounding_box().height();
       break;
     case ui::ET_GESTURE_TAP_CANCEL:
       gesture_event.type = WebKit::WebInputEvent::GestureTapCancel;
       break;
     case ui::ET_GESTURE_DOUBLE_TAP:
       gesture_event.type = WebKit::WebInputEvent::GestureDoubleTap;
       break;
     case ui::ET_GESTURE_SCROLL_BEGIN:
       gesture_event.type = WebKit::WebInputEvent::GestureScrollBegin;
       break;
@@ skipping 115 matching lines @@
 
   // Update the type of the touch event.
   web_event->type = TouchEventTypeFromEvent(event);
   web_event->timeStampSeconds = event->time_stamp().InSecondsF();
   web_event->modifiers = EventFlagsToWebEventModifiers(event->flags());
 
   return point;
 }
 
 }  // namespace content