Introduce support for text-decoration-skip: ink

third_party/WebKit/Source/core/paint/TextPainter.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef TextPainter_h
 #define TextPainter_h
 
 #include "core/CoreExport.h"
 #include "core/style/ComputedStyleConstants.h"
 #include "platform/fonts/TextBlob.h"
@@ skipping 36 matching lines @@
   void setEmphasisMark(const AtomicString&, TextEmphasisPosition);
   void setCombinedText(LayoutTextCombine* combinedText) {
     m_combinedText = combinedText;
   }
 
   static void updateGraphicsContext(GraphicsContext&,
                                     const Style&,
                                     bool horizontal,
                                     GraphicsContextStateSaver&);
 
+  void clipDecorationsStripe(float upper, float stripeWidth, float dilation);
   void paint(unsigned startOffset,
              unsigned endOffset,
              unsigned length,
              const Style&,
              TextBlobPtr* cachedTextBlob = 0);
 
   struct Style {
     STACK_ALLOCATED();
     Color currentColor;
     Color fillColor;
@@ skipping 73 matching lines @@
   return rotationDirection == Clockwise
              ? AffineTransform(0, 1, -1, 0, boxRect.x() + boxRect.maxY(),
                                boxRect.y() - boxRect.x())
              : AffineTransform(0, -1, 1, 0, boxRect.x() - boxRect.y(),
                                boxRect.x() + boxRect.maxY());
 }
 
 }  // namespace blink
 
 #endif  // TextPainter_h