Walk render tree instead of render layers for paint.

sky/engine/core/rendering/RenderParagraph.cpp

 // 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.
 
 #include "sky/engine/config.h"
 #include "sky/engine/core/rendering/RenderParagraph.h"
 
 #include "sky/engine/core/rendering/BidiRunForLine.h"
 #include "sky/engine/core/rendering/InlineIterator.h"
 #include "sky/engine/core/rendering/RenderLayer.h"
@@ skipping 154 matching lines @@
       }
 
       // FIXME: Glyph overflow will get lost in this case, but not really a big deal.
       GlyphOverflowAndFallbackFontsMap textBoxDataMap;
       for (ListHashSet<RootInlineBox*>::const_iterator it = lineBoxes.begin(); it != lineBoxes.end(); ++it) {
           RootInlineBox* box = *it;
           box->computeOverflow(box->lineTop(), box->lineBottom(), textBoxDataMap);
       }
 }
 
-void RenderParagraph::paintChildren(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
+void RenderParagraph::paintChildren(PaintInfo& paintInfo, const LayoutPoint& paintOffset, Vector<RenderBox*>& layers)
 {
-    m_lineBoxes.paint(this, paintInfo, paintOffset);
+    m_lineBoxes.paint(this, paintInfo, paintOffset, layers);
 }
 
 bool RenderParagraph::hitTestContents(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
 {
     return m_lineBoxes.hitTest(this, request, result, locationInContainer, accumulatedOffset, hitTestAction);
 }
 
 void RenderParagraph::markLinesDirtyInBlockRange(LayoutUnit logicalTop, LayoutUnit logicalBottom, RootInlineBox* highest)
 {
     if (logicalTop >= logicalBottom)
@@ skipping 1385 matching lines @@
                     curr->adjustLogicalPosition(logicalLeft, 0);
                 else
                     curr->adjustLogicalPosition(logicalLeft - (availableLogicalWidth - totalLogicalWidth), 0);
             }
         }
         firstLine = false;
     }
 }
 
 } // namespace blink