Fix uninitialized memory read. This is a temporary patch until the bugs in th...

third_party/WebKit/WebCore/rendering/RenderView.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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 33 matching lines @@
     , m_frameView(view)
     , m_selectionStart(0)
     , m_selectionEnd(0)
     , m_selectionStartPos(-1)
     , m_selectionEndPos(-1)
     , m_printImages(true)
     , m_maximalOutlineSize(0)
     , m_layoutState(0)
     , m_layoutStateDisableCount(0)
 {
+    // TODO(brettw): This change is at the suggestion of Hyatt. It fixes an
+    // uninitialized memory read. It was fixed in:
+    //   http://trac.webkit.org/changeset/42334 and
+    //   http://trac.webkit.org/changeset/42336
+    // but those changes broke Gmail. So this change is temporary until we
+    // merge to a good revision with it fixed.
+    m_docHeight = 0;
+    m_docWidth = 0;
+
     // Clear our anonymous bit, set because RenderObject assumes
     // any renderer with document as the node is anonymous.
     setIsAnonymous(false);
 
     // init RenderObject attributes
     setInline(false);
     
     m_minPrefWidth = 0;
     m_maxPrefWidth = 0;
 
@@ skipping 621 matching lines @@
 void RenderView::willMoveOffscreen()
 {
 #if USE(ACCELERATED_COMPOSITING)
     if (m_compositor)
         m_compositor->willMoveOffscreen();
 #endif
 }
 
 } // namespace WebCore