Let synchronized painting generate correct paint invalidation rects

third_party/WebKit/Source/core/layout/LayoutText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 1855 matching lines @@
         gSecureTextTimers->add(this, secureTextTimer);
     }
     secureTextTimer->restartWithNewText(lastTypedCharacterOffset);
 }
 
 PassRefPtr<AbstractInlineTextBox> LayoutText::firstAbstractInlineTextBox()
 {
     return AbstractInlineTextBox::getOrCreate(this, m_firstTextBox);
 }
 
-void LayoutText::invalidateDisplayItemClients(const LayoutBoxModelObject& paintInvalidationContainer, PaintInvalidationReason invalidationReason, const LayoutRect& previousPaintInvalidationRect, const LayoutRect& newPaintInvalidationRect) const
+void LayoutText::invalidateDisplayItemClients(const LayoutBoxModelObject& paintInvalidationContainer, PaintInvalidationReason invalidationReason, const LayoutRect* paintInvalidationRect) const
 {
-    LayoutObject::invalidateDisplayItemClients(paintInvalidationContainer, invalidationReason, previousPaintInvalidationRect, newPaintInvalidationRect);
+    LayoutObject::invalidateDisplayItemClients(paintInvalidationContainer, invalidationReason, paintInvalidationRect);
 
-    LayoutRect emptyInvalidationRect;
+    // TODO(wangxianzhu): Pass current bounds of text boxes to PaintController. crbug.com/547119.
     for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
-        paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*box, invalidationReason, emptyInvalidationRect, emptyInvalidationRect);
+        paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*box, invalidationReason, nullptr);
         if (box->truncation() != cNoTruncation) {
             if (EllipsisBox* ellipsisBox = box->root().ellipsisBox())
-                paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*ellipsisBox, invalidationReason, emptyInvalidationRect, emptyInvalidationRect);
+                paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*ellipsisBox, invalidationReason, nullptr);
         }
     }
 }
 
 } // namespace blink