Have Frame::loader() return a reference

Source/web/WebPagePopupImpl.cpp

 /*
  * Copyright (C) 2012 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 194 matching lines @@
     provideContextFeaturesTo(m_page.get(), pagePopupFeaturesClient);
     static FrameLoaderClient* emptyFrameLoaderClient =  new EmptyFrameLoaderClient();
     RefPtr<Frame> frame = Frame::create(m_page.get(), 0, emptyFrameLoaderClient);
     frame->setView(FrameView::create(frame.get()));
     frame->init();
     frame->view()->resize(m_popupClient->contentSize());
     frame->view()->setTransparent(false);
 
     DOMWindowPagePopup::install(frame->domWindow(), m_popupClient);
 
-    DocumentWriter* writer = frame->loader()->activeDocumentLoader()->beginWriting("text/html", "UTF-8");
+    DocumentWriter* writer = frame->loader().activeDocumentLoader()->beginWriting("text/html", "UTF-8");
     m_popupClient->writeDocument(*writer);
-    frame->loader()->activeDocumentLoader()->endWriting(writer);
+    frame->loader().activeDocumentLoader()->endWriting(writer);
     return true;
 }
 
 void WebPagePopupImpl::destroyPage()
 {
     if (!m_page)
         return;
 
     if (m_page->mainFrame())
-        m_page->mainFrame()->loader()->frameDetached();
+        m_page->mainFrame()->loader().frameDetached();
 
     m_page.clear();
 }
 
 WebSize WebPagePopupImpl::size()
 {
     return m_popupClient->contentSize();
 }
 
 void WebPagePopupImpl::animate(double)
@@ skipping 72 matching lines @@
     m_closing = true;
     destroyPage(); // In case closePopup() was not called.
     m_widgetClient = 0;
     deref();
 }
 
 void WebPagePopupImpl::closePopup()
 {
     if (m_page) {
         m_page->clearPageGroup();
-        m_page->mainFrame()->loader()->stopAllLoaders();
+        m_page->mainFrame()->loader().stopAllLoaders();
         DOMWindowPagePopup::uninstall(m_page->mainFrame()->domWindow());
     }
     m_closing = true;
 
     destroyPage();
 
     // m_widgetClient might be 0 because this widget might be already closed.
     if (m_widgetClient) {
         // closeWidgetSoon() will call this->close() later.
         m_widgetClient->closeWidgetSoon();
@@ skipping 11 matching lines @@
     // A WebPagePopupImpl instance usually has two references.
     //  - One owned by the instance itself. It represents the visible widget.
     //  - One owned by a WebViewImpl. It's released when the WebViewImpl ask the
     //    WebPagePopupImpl to close.
     // We need them because the closing operation is asynchronous and the widget
     // can be closed while the WebViewImpl is unaware of it.
     return adoptRef(new WebPagePopupImpl(client)).leakRef();
 }
 
 } // namespace WebKit