Made Frame constructors (and subclasses) take Page& instead of Page*

third_party/WebKit/Source/core/dom/ElementVisibilityObserverTest.cpp

 // Copyright 2016 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 "core/dom/ElementVisibilityObserver.h"
 
 #include "core/dom/DOMImplementation.h"
 #include "core/dom/Document.h"
 #include "core/frame/RemoteFrame.h"
 #include "core/html/HTMLDivElement.h"
@@ skipping 52 matching lines @@
       *DOMImplementation::create(document())->createHTMLDocument("test"));
   ElementVisibilityObserver* observer =
       new ElementVisibilityObserver(element, nullptr);
   observer->start();
   observer->stop();
   // It should not crash.
 }
 
 TEST_F(ElementVisibilityObserverTest, ObserveElementInRemoteFrame) {
   Persistent<RemoteFrame> remoteFrame =
-      RemoteFrame::create(new EmptyRemoteFrameClient(), &page(), nullptr);
+      RemoteFrame::create(new EmptyRemoteFrameClient(), page(), nullptr);
   localFrameClient()->setParent(remoteFrame);
 
   Persistent<HTMLElement> element = HTMLDivElement::create(document());
   ElementVisibilityObserver* observer =
       new ElementVisibilityObserver(element, WTF::bind([](bool) {}));
   observer->start();
   observer->deliverObservationsForTesting();
   observer->stop();
   // It should not crash.
 }
 
 }  // anonymous namespace
 
 }  // blink namespace