[Reland] Invalidate whitespace text on text color changes

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

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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 2164 matching lines @@
 {
     for (node = nextAtomicLeafNode(*node); node; node = nextAtomicLeafNode(*node)) {
         LayoutObject* layoutObject = node->layoutObject();
         if (!layoutObject)
             continue;
         if (!node->hasEditableStyle())
             continue;
         // TODO(yosin) We should have a function to check |InlineBox| types
         // in layout rather than using |InlineBox| here. See also
         // |previousRenderedEditable()| which has a same condition.
-        if ((layoutObject->isBox() && toLayoutBox(layoutObject)->inlineBoxWrapper()) || (layoutObject->isText() && toLayoutText(layoutObject)->firstTextBox()))
+        if ((layoutObject->isBox() && toLayoutBox(layoutObject)->inlineBoxWrapper()) || (layoutObject->isText() && toLayoutText(layoutObject)->hasTextBoxes()))
             return node;
     }
     return 0;
 }
 
 static Node* previousRenderedEditable(Node* node)
 {
     for (node = previousAtomicLeafNode(*node); node; node = previousAtomicLeafNode(*node)) {
         LayoutObject* layoutObject = node->layoutObject();
         if (!layoutObject)
             continue;
         if (!node->hasEditableStyle())
             continue;
         // TODO(yosin) We should have a function to check |InlineBox| types
         // in layout rather than using |InlineBox| here. See also
         // |nextRenderedEditable()| which has a same condition.
-        if ((layoutObject->isBox() && toLayoutBox(layoutObject)->inlineBoxWrapper()) || (layoutObject->isText() && toLayoutText(layoutObject)->firstTextBox()))
+        if ((layoutObject->isBox() && toLayoutBox(layoutObject)->inlineBoxWrapper()) || (layoutObject->isText() && toLayoutText(layoutObject)->hasTextBoxes()))
             return node;
     }
     return 0;
 }
 
 static int renderedOffsetOf(const Position& position)
 {
     const int offset = position.computeEditingOffset();
     Node* const anchorNode = position.anchorNode();
     if (!anchorNode->isTextNode() || !anchorNode->layoutObject())
@@ skipping 1026 matching lines @@
 {
     return previousPositionOfAlgorithm<EditingStrategy>(visiblePosition, rule);
 }
 
 VisiblePositionInComposedTree previousPositionOf(const VisiblePositionInComposedTree& visiblePosition, EditingBoundaryCrossingRule rule)
 {
     return previousPositionOfAlgorithm<EditingInComposedTreeStrategy>(visiblePosition, rule);
 }
 
 } // namespace blink