Change FrameTree to return Frames instead of LocalFrames.

Source/core/rendering/TextAutosizer.cpp

Index: Source/core/rendering/TextAutosizer.cpp
diff --git a/Source/core/rendering/TextAutosizer.cpp b/Source/core/rendering/TextAutosizer.cpp
index c14992635b636bcb46a0d44914d2372db7da6535..9bd2914519f2bec0d125914b7b48f3a975d6021e 100644
--- a/Source/core/rendering/TextAutosizer.cpp
+++ b/Source/core/rendering/TextAutosizer.cpp
@@ -212,8 +212,10 @@ bool TextAutosizer::processSubtree(RenderObject* layoutRoot)
     // Largest area of block that can be visible at once (assuming the main
     // frame doesn't get scaled to less than overview scale), in CSS pixels.
     windowInfo.minLayoutSize = mainFrame->view()->layoutSize();
-    for (LocalFrame* frame = m_document->frame(); frame; frame = frame->tree().parent())
-        windowInfo.minLayoutSize = windowInfo.minLayoutSize.shrunkTo(frame->view()->layoutSize());
+    for (Frame* frame = m_document->frame(); frame; frame = frame->tree().parent()) {
+        if (frame->isLocalFrame())
+            windowInfo.minLayoutSize = windowInfo.minLayoutSize.shrunkTo(toLocalFrame(frame)->view()->layoutSize());
+    }
 
     // The layoutRoot could be neither a container nor a cluster, so walk up the tree till we find each of these.
     RenderBlock* container = layoutRoot->isRenderBlock() ? toRenderBlock(layoutRoot) : layoutRoot->containingBlock();