Page::chrome() should return a reference.

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 184 matching lines @@
     ASSERT(page);
 
     page->setDeviceScaleFactor(1);
     page->setPageScaleFactor(1, IntPoint(0, 0));
     page->setPagination(Pagination());
     TextRun::setAllowsRoundingHacks(false);
     WebCore::overrideUserPreferredLanguages(Vector<String>());
     WebCore::Settings::setUsesOverlayScrollbars(false);
     delete s_pagePopupDriver;
     s_pagePopupDriver = 0;
-    if (page->chrome())
-        page->chrome()->client()->resetPagePopupDriver();
+    page->chrome().client()->resetPagePopupDriver();
     if (page->inspectorController())
         page->inspectorController()->setProfilerEnabled(false);
     page->group().captionPreferences()->setTestingMode(false);
     if (!page->mainFrame()->editor()->isContinuousSpellCheckingEnabled())
         page->mainFrame()->editor()->toggleContinuousSpellChecking();
     if (page->mainFrame()->editor()->isOverwriteModeEnabled())
         page->mainFrame()->editor()->toggleOverwriteModeEnabled();
 }
 
 Internals::Internals(Document* document)
@@ skipping 510 matching lines @@
     SpeechSynthesis* synthesis = DOMWindowSpeechSynthesis::speechSynthesis(document->domWindow());
     if (!synthesis)
         return;
 
     synthesis->setPlatformSynthesizer(PlatformSpeechSynthesizerMock::create(synthesis));
 }
 
 void Internals::setEnableMockPagePopup(bool enabled, ExceptionCode& ec)
 {
     Document* document = contextDocument();
-    if (!document || !document->page() || !document->page()->chrome())
+    if (!document || !document->page())
         return;
     Page* page = document->page();
     if (!enabled) {
-        page->chrome()->client()->resetPagePopupDriver();
+        page->chrome().client()->resetPagePopupDriver();
         return;
     }
     if (!s_pagePopupDriver)
         s_pagePopupDriver = MockPagePopupDriver::create(page->mainFrame()).leakPtr();
-    page->chrome()->client()->setPagePopupDriver(s_pagePopupDriver);
+    page->chrome().client()->setPagePopupDriver(s_pagePopupDriver);
 }
 
 PassRefPtr<PagePopupController> Internals::pagePopupController()
 {
     return s_pagePopupDriver ? s_pagePopupDriver->pagePopupController() : 0;
 }
 
 PassRefPtr<ClientRect> Internals::absoluteCaretBounds(ExceptionCode& ec)
 {
     Document* document = contextDocument();
@@ skipping 1179 matching lines @@
 
     RenderObject* renderer = select->renderer();
     if (!renderer->isMenuList())
         return false;
 
     RenderMenuList* menuList = toRenderMenuList(renderer);
     return menuList->popupIsVisible();
 }
 
 }