Allow creating background tabs in response to ctrl+tapping events

Source/web/FrameLoaderClientImpl.cpp

Index: Source/web/FrameLoaderClientImpl.cpp
diff --git a/Source/web/FrameLoaderClientImpl.cpp b/Source/web/FrameLoaderClientImpl.cpp
index 6ae4d70b7047ea8a8d510925e25a8293fa7a7aef..b23c973cd5e46249f90cbc82be65273a748681a9 100644
--- a/Source/web/FrameLoaderClientImpl.cpp
+++ b/Source/web/FrameLoaderClientImpl.cpp
@@ -477,8 +477,10 @@ void FrameLoaderClientImpl::dispatchDidChangeThemeColor()
 
 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;