Change Page::m_mainFrame to be a Frame.

Source/core/page/FocusController.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 393 matching lines @@
     if (!node) {
         // We didn't find a node to focus, so we should try to pass focus to Chrome.
         if (!initialFocus && m_page->chrome().canTakeFocus(type)) {
             document->setFocusedElement(nullptr);
             setFocusedFrame(nullptr);
             m_page->chrome().takeFocus(type);
             return true;
         }
 
         // Chrome doesn't want focus, so we should wrap focus.
-        node = findFocusableNodeRecursively(type, FocusNavigationScope::focusNavigationScopeOf(m_page->mainFrame()->document()), 0);
+        // FIXME: But this only works without OOPI
+        if (!m_page->mainFrame()->isLocalFrame())
+            return false;
+        node = findFocusableNodeRecursively(type, FocusNavigationScope::focusNavigationScopeOf(toLocalFrame(m_page->mainFrame())->document()), 0);
         node = findFocusableNodeDecendingDownIntoFrameDocument(type, node.get());
 
         if (!node)
             return false;
     }
 
     ASSERT(node);
 
     if (node == document->focusedElement())
         // Focus wrapped around to the same node.
@@ skipping 288 matching lines @@
     return true;
 }
 
 void FocusController::setActive(bool active)
 {
     if (m_isActive == active)
         return;
 
     m_isActive = active;
 
-    if (FrameView* view = m_page->mainFrame()->view())
-        view->updateControlTints();
+    if (m_page->mainFrame()->isLocalFrame()) {
+        if (FrameView* view = toLocalFrame(m_page->mainFrame())->view())
+            view->updateControlTints();
+    }
 
     toLocalFrame(focusedOrMainFrame())->selection().pageActivationChanged();
 }
 
 static void updateFocusCandidateIfNeeded(FocusType type, const FocusCandidate& current, FocusCandidate& candidate, FocusCandidate& closest)
 {
     ASSERT(candidate.visibleNode->isElementNode());
     ASSERT(candidate.visibleNode->renderer());
 
     // Ignore iframes that don't have a src attribute
@@ skipping 15 matching lines @@
         closest = candidate;
         return;
     }
 
     LayoutRect intersectionRect = intersection(candidate.rect, closest.rect);
     if (!intersectionRect.isEmpty() && !areElementsOnSameLine(closest, candidate)
         && intersectionRect == candidate.rect) {
         // If 2 nodes are intersecting, do hit test to find which node in on top.
         LayoutUnit x = intersectionRect.x() + intersectionRect.width() / 2;
         LayoutUnit y = intersectionRect.y() + intersectionRect.height() / 2;
-        HitTestResult result = candidate.visibleNode->document().page()->mainFrame()->eventHandler().hitTestResultAtPoint(IntPoint(x, y), HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::IgnoreClipping | HitTestRequest::ConfusingAndOftenMisusedDisallowShadowContent);
+        if (!candidate.visibleNode->document().page()->mainFrame()->isLocalFrame())
+            return;
+        HitTestResult result = toLocalFrame(candidate.visibleNode->document().page()->mainFrame())->eventHandler().hitTestResultAtPoint(IntPoint(x, y), HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::IgnoreClipping | HitTestRequest::ConfusingAndOftenMisusedDisallowShadowContent);
         if (candidate.visibleNode->contains(result.innerNode())) {
             closest = candidate;
             return;
         }
         if (closest.visibleNode->contains(result.innerNode()))
             return;
     }
 
     if (candidate.alignment == closest.alignment) {
         if (candidate.distance < closest.distance)
@@ skipping 140 matching lines @@
         startingRect = nodeRectInAbsoluteCoordinates(container, true /* ignore border */);
         container = scrollableEnclosingBoxOrParentFrameForNodeInDirection(type, container);
         if (container && container->isDocumentNode())
             toDocument(container)->updateLayoutIgnorePendingStylesheets();
     } while (!consumed && container);
 
     return consumed;
 }
 
 } // namespace WebCore