Fix caret paint invalidation issue on partial lifecycle updates

third_party/WebKit/Source/core/editing/CaretDisplayItemClient.cpp

 /*
  * Copyright (C) 2004, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 97 matching lines @@
   // Get the layoutObject that will be responsible for painting the caret
   // (which is either the layoutObject we just found, or one of its containers).
   LayoutBlockItem caretPainterItem =
       LayoutBlockItem(caretLayoutBlock(caretPosition.anchorNode()));
   LayoutRect caretLocalRectWithWritingMode = caretLocalRect;
   caretPainterItem.flipForWritingMode(caretLocalRectWithWritingMode);
   return mapCaretRectToCaretPainter(LayoutItem(layoutObject), caretPainterItem,
                                     caretLocalRectWithWritingMode);
 }
 
-void CaretDisplayItemClient::updateStyleAndLayoutIfNeeded(
+void CaretDisplayItemClient::updateForPaintInvalidation(
     const PositionWithAffinity& caretPosition) {
   m_previousLayoutBlock = m_layoutBlock;
   m_previousVisualRect = m_visualRect;
 
   LayoutBlock* newLayoutBlock = caretLayoutBlock(caretPosition.anchorNode());
   if (newLayoutBlock != m_layoutBlock) {
     if (m_layoutBlock)
       m_layoutBlock->setMayNeedPaintInvalidation();
     m_layoutBlock = newLayoutBlock;
     if (newLayoutBlock)
@@ skipping 118 matching lines @@
 
 String CaretDisplayItemClient::debugName() const {
   return "Caret";
 }
 
 LayoutRect CaretDisplayItemClient::visualRect() const {
   return m_visualRect;
 }
 
 }  // namespace blink