TextAutosizer: unlock multipliers on DOMContentLoaded.

Source/core/rendering/TextAutosizer.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 151 matching lines @@
         rendererParent = rendererParent->parent();
 
     const unsigned parentHashValue = rendererParent ? getCachedHash(rendererParent, true) : 0;
     const unsigned hashes[2] = { parentHashValue, computeLocalHash(renderer) };
     const unsigned combinedHashValue = hashMemory(hashes, sizeof(hashes));
     if (putInCacheIfAbsent)
         m_hashCache.add(renderer, combinedHashValue);
     return combinedHashValue;
 }
 
+bool TextAutosizer::isApplicable() const
+{
+    return m_document->settings()
+        && m_document->settings()->textAutosizingEnabled()
+        && m_document->page()
+        && m_document->page()->mainFrame()
+        && m_document->page()->mainFrame()->loader().stateMachine()->committedFirstRealDocumentLoad();
+}
+
 void TextAutosizer::recalculateMultipliers()
 {
+    if (!isApplicable())
+        return;
+
     RenderObject* renderer = m_document->renderer();
     while (renderer) {
         if (renderer->style() && renderer->style()->textAutosizingMultiplier() != 1)
             setMultiplier(renderer, 1);
         renderer = renderer->nextInPreOrder();
     }
 }
 
 bool TextAutosizer::processSubtree(RenderObject* layoutRoot)
 {
     TRACE_EVENT0("webkit", "TextAutosizer: check if needed");
-    if (!m_document->settings() || layoutRoot->view()->document().printing() || !m_document->page())
-        return false;
 
-    bool textAutosizingEnabled = m_document->settings()->textAutosizingEnabled();
-    if (!textAutosizingEnabled)
+    if (!isApplicable() || layoutRoot->view()->document().printing())
         return false;
 
     LocalFrame* mainFrame = m_document->page()->mainFrame();
     TextAutosizingWindowInfo windowInfo;
 
-    if (!mainFrame->loader().stateMachine()->committedFirstRealDocumentLoad())
-        return false;
-
-
     // Window area, in logical (density-independent) pixels.
     windowInfo.windowSize = m_document->settings()->textAutosizingWindowSizeOverride();
     if (windowInfo.windowSize.isEmpty())
         windowInfo.windowSize = mainFrame->view()->unscaledVisibleContentSize(IncludeScrollbars);
 
     // 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());
@@ skipping 630 matching lines @@
         if (i + 1 < clusterInfos.size()) {
             LayoutUnit currentWidth = clusterInfos[i].root->contentLogicalWidth();
             LayoutUnit nextWidth = clusterInfos[i + 1].root->contentLogicalWidth();
             if (currentWidth - nextWidth > maxWidthDifferenceWithinGroup)
                 groups.grow(groups.size() + 1);
         }
     }
 }
 
 } // namespace WebCore