Change Page::m_mainFrame to be a Frame.

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 221 matching lines @@
     frame->loader().load(FrameLoadRequest(0, blankURL(), SubstituteData(data, "text/html", "UTF-8", KURL(), ForceSynchronousLoad)));
     return true;
 }
 
 void WebPagePopupImpl::destroyPage()
 {
     if (!m_page)
         return;
 
     if (m_page->mainFrame())
-        m_page->mainFrame()->loader().frameDetached();
+        toLocalFrame(m_page->mainFrame())->loader().frameDetached();
 
     m_page->willBeDestroyed();
     m_page.clear();
 }
 
 void WebPagePopupImpl::setRootGraphicsLayer(GraphicsLayer* layer)
 {
     m_rootGraphicsLayer = layer;
     m_rootLayer = layer ? layer->platformLayer() : 0;
 
@@ skipping 57 matching lines @@
     if (!m_closing)
         PageWidgetDelegate::paint(m_page.get(), 0, canvas, rect, PageWidgetDelegate::Opaque);
 }
 
 void WebPagePopupImpl::resize(const WebSize& newSize)
 {
     m_windowRectInScreen = WebRect(m_windowRectInScreen.x, m_windowRectInScreen.y, newSize.width, newSize.height);
     m_widgetClient->setWindowRect(m_windowRectInScreen);
 
     if (m_page)
-        m_page->mainFrame()->view()->resize(newSize);
+        toLocalFrame(m_page->mainFrame())->view()->resize(newSize);
     m_widgetClient->didInvalidateRect(WebRect(0, 0, newSize.width, newSize.height));
 }
 
 bool WebPagePopupImpl::handleKeyEvent(const WebKeyboardEvent&)
 {
     // The main WebView receives key events and forward them to this via handleKeyEvent().
     ASSERT_NOT_REACHED();
     return false;
 }
 
 bool WebPagePopupImpl::handleCharEvent(const WebKeyboardEvent&)
 {
     // The main WebView receives key events and forward them to this via handleKeyEvent().
     ASSERT_NOT_REACHED();
     return false;
 }
 
 bool WebPagePopupImpl::handleGestureEvent(const WebGestureEvent& event)
 {
-    if (m_closing || !m_page || !m_page->mainFrame() || !m_page->mainFrame()->view())
+    if (m_closing || !m_page || !m_page->mainFrame() || !toLocalFrame(m_page->mainFrame())->view())
         return false;
-    LocalFrame& frame = *m_page->mainFrame();
+    LocalFrame& frame = *toLocalFrame(m_page->mainFrame());
     return frame.eventHandler().handleGestureEvent(PlatformGestureEventBuilder(frame.view(), event));
 }
 
 bool WebPagePopupImpl::handleInputEvent(const WebInputEvent& event)
 {
     if (m_closing)
         return false;
     return PageWidgetDelegate::handleInputEvent(m_page.get(), *this, event);
 }
 
 bool WebPagePopupImpl::handleKeyEvent(const PlatformKeyboardEvent& event)
 {
-    if (m_closing || !m_page->mainFrame() || !m_page->mainFrame()->view())
+    if (m_closing || !m_page->mainFrame() || !toLocalFrame(m_page->mainFrame())->view())
         return false;
-    return m_page->mainFrame()->eventHandler().keyEvent(event);
+    return toLocalFrame(m_page->mainFrame())->eventHandler().keyEvent(event);
 }
 
 void WebPagePopupImpl::setFocus(bool enable)
 {
     if (!m_page)
         return;
     m_page->focusController().setFocused(enable);
     if (enable)
         m_page->focusController().setActive(true);
 }
 
 void WebPagePopupImpl::close()
 {
     m_closing = true;
     destroyPage(); // In case closePopup() was not called.
     m_widgetClient = 0;
     deref();
 }
 
 void WebPagePopupImpl::closePopup()
 {
     if (m_page) {
-        m_page->mainFrame()->loader().stopAllLoaders();
+        toLocalFrame(m_page->mainFrame())->loader().stopAllLoaders();
         ASSERT(m_page->mainFrame()->domWindow());
         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.
@@ skipping 12 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 blink