Return early from TextAutosizer::updatePageInfo for remote main frame.

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 226c2894214abbd795d09dd63e2337002984b9a1..8685e0fce5cf979207fd6fefc206c0ce0139a8ad 100644
--- a/Source/core/rendering/TextAutosizer.cpp
+++ b/Source/core/rendering/TextAutosizer.cpp
@@ -509,7 +509,13 @@ void TextAutosizer::updatePageInfo()
         RenderView* renderView = m_document->renderView();
         bool horizontalWritingMode = isHorizontalWritingMode(renderView->style()->writingMode());
 
-        LocalFrame* mainFrame = m_document->page()->deprecatedLocalMainFrame();
+        // FIXME: With out-of-process iframes, the top frame can be remote and
+        // doesn't have sizing information. Just return if this is the case.
+        Frame* frame = m_document->frame()->tree().top();
+        if (frame->isRemoteFrame())
+            return;
+
+        LocalFrame* mainFrame = toLocalFrame(frame);

[dcheng, 2014/10/23 21:48:17]

I would probably still use dprecatedLocalMainFrame() here to help us flag it for
later cleanup.

[nasko, 2014/10/23 21:50:44]

Done.

         IntSize frameSize = m_document->settings()->textAutosizingWindowSizeOverride();
         if (frameSize.isEmpty())
             frameSize = windowSize();