Have Frame::navigationScheduler() return a reference

Source/core/page/CreateWindow.cpp

Index: Source/core/page/CreateWindow.cpp
diff --git a/Source/core/page/CreateWindow.cpp b/Source/core/page/CreateWindow.cpp
index 10d2694b33295e374e71d6c897839ca0bb2484a7..b8ce0491f25b591d4277241c44791f6513100876 100644
--- a/Source/core/page/CreateWindow.cpp
+++ b/Source/core/page/CreateWindow.cpp
@@ -151,7 +151,7 @@ Frame* createWindow(const String& urlString, const AtomicString& frameName, cons
         FrameLoadRequest request(activeWindow->document()->securityOrigin(), ResourceRequest(completedURL, referrer));
         newFrame->loader()->load(request);
     } else if (!urlString.isEmpty()) {
-        newFrame->navigationScheduler()->scheduleLocationChange(activeWindow->document()->securityOrigin(), completedURL.string(), referrer, false);
+        newFrame->navigationScheduler().scheduleLocationChange(activeWindow->document()->securityOrigin(), completedURL.string(), referrer, false);
     }
     return newFrame;
 }