Remove references to WebTouchEvent.targetTouches

content/renderer/browser_plugin/browser_plugin.cc

 // Copyright 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/renderer/browser_plugin/browser_plugin.h"
 
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 561 matching lines @@
 bool BrowserPlugin::handleInputEvent(const blink::WebInputEvent& event,
                                      blink::WebCursorInfo& cursor_info) {
   if (guest_crashed_ || !ready())
     return false;
 
   if (event.type == blink::WebInputEvent::ContextMenu)
     return true;
 
   const blink::WebInputEvent* modified_event = &event;
   scoped_ptr<blink::WebTouchEvent> touch_event;
-  if (blink::WebInputEvent::isTouchEventType(event.type)) {
+  // TODO(jdduke): Remove this branch when Blink starts forwarding
+  // WebTouchEvents with a fully populated |touches| field.
+  if (blink::WebInputEvent::isTouchEventType(event.type) &&
+      static_cast<const blink::WebTouchEvent*>(&event)->changedTouchesLength) {
     const blink::WebTouchEvent* orig_touch_event =
         static_cast<const blink::WebTouchEvent*>(&event);
 
     touch_event.reset(new blink::WebTouchEvent());
     memcpy(touch_event.get(), orig_touch_event, sizeof(blink::WebTouchEvent));
 
     // TODO(bokan): Blink passes back a WebGestureEvent with a touches,
     // changedTouches, and targetTouches lists; however, it doesn't set
     // the state field on the touches which is what the RenderWidget uses
     // to create a WebCore::TouchEvent. crbug.com/358132 tracks removing
@@ skipping 175 matching lines @@
     const blink::WebMouseEvent& event) {
   browser_plugin_manager()->Send(
       new BrowserPluginHostMsg_HandleInputEvent(render_view_routing_id_,
                                                 browser_plugin_instance_id_,
                                                 plugin_rect_,
                                                 &event));
   return true;
 }
 
 }  // namespace content