Pass tap count (1 or 2) with tap gesture events

content/browser/renderer_host/render_widget_host_view_win.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.
 
 #include "content/browser/renderer_host/render_widget_host_view_win.h"
 
 #include <algorithm>
 #include <map>
 #include <peninputpanel_i.c>
 #include <stack>
@@ skipping 397 matching lines @@
     // Map to the appropriate window's coordinates. For a root window the
     // coordinates won't change, because the parent shares our rect.
     POINT client_point = { location.x(), location.y()};
     MapWindowPoints(::GetParent(hwnd), hwnd, &client_point, 1);
     POINT screen_point = { location.x(), location.y()};
     MapWindowPoints(hwnd, HWND_DESKTOP, &screen_point, 1);
     data().x = client_point.x;
     data().y = client_point.y;
     data().globalX = screen_point.x;
     data().globalY = screen_point.y;
-    data().deltaX = details.generic_x();
-    data().deltaY = details.generic_y();
     data().type = ConvertToWebInputEvent(type_);
     data().boundingBox = details.bounding_box();
+
+    // Copy any event-type specific data.
+    switch (type_) {
+      case ui::ET_GESTURE_TAP:
+        data().deltaX = details.tap_count();
+        break;
+      case ui::ET_GESTURE_SCROLL_UPDATE:
+        data().deltaX = details.scroll_x();
+        data().deltaY = details.scroll_y();
+        break;
+      case ui::ET_GESTURE_PINCH_UPDATE:
+        data().deltaX = details.scale();
+        break;
+      case ui::ET_SCROLL_FLING_START:
+        data().deltaX = details.velocity_x();
+        data().deltaY = details.velocity_y();
+      default:
+        break;
+    }
   }
 
   virtual int GetLowestTouchId() const OVERRIDE {
     return LowestBit(touch_ids_bitfield_);
   }
 
   ui::EventType type() {
     return type_;
   }
 
@@ skipping 2716 matching lines @@
   // receive a focus change in the context of a pointer down message, it means
   // that the pointer down message occurred on the edit field and we should
   // display the on screen keyboard
   if (!received_focus_change_after_pointer_down_ && virtual_keyboard_)
     DisplayOnScreenKeyboardIfNeeded();
   received_focus_change_after_pointer_down_ = false;
   pointer_down_context_ = false;
 }
 
 }  // namespace content