Allow creating background tabs in response to ctrl+tapping events

Source/web/FrameLoaderClientImpl.cpp

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 459 matching lines @@
 }
 
 void FrameLoaderClientImpl::dispatchDidChangeThemeColor()
 {
     if (m_webFrame->client())
         m_webFrame->client()->didChangeThemeColor();
 }
 
 static bool allowCreatingBackgroundTabs()
 {
+
     const WebInputEvent* inputEvent = WebViewImpl::currentInputEvent();
-    if (!inputEvent || (inputEvent->type != WebInputEvent::MouseUp && (inputEvent->type != WebInputEvent::RawKeyDown && inputEvent->type != WebInputEvent::KeyDown)))
+    if (!inputEvent || (inputEvent->type != WebInputEvent::MouseUp && (inputEvent->type != WebInputEvent::RawKeyDown && inputEvent->type != WebInputEvent::KeyDown)
+        && inputEvent->type != WebInputEvent::GestureTap))
         return false;
 
     unsigned short buttonNumber;
     if (WebInputEvent::isMouseEventType(inputEvent->type)) {
         const WebMouseEvent* mouseEvent = static_cast<const WebMouseEvent*>(inputEvent);
 
         switch (mouseEvent->button) {
         case WebMouseEvent::ButtonLeft:
             buttonNumber = 0;
             break;
@@ skipping 464 matching lines @@
 
 void FrameLoaderClientImpl::suddenTerminationDisablerChanged(bool present, SuddenTerminationDisablerType type)
 {
     if (m_webFrame->client()) {
         m_webFrame->client()->suddenTerminationDisablerChanged(
             present, static_cast<WebFrameClient::SuddenTerminationDisablerType>(type));
     }
 }
 
 } // namespace blink