Move computeSelfHitTestRects() to LayoutBlockFlow.

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

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1900 matching lines @@
     }
 }
 
 void LayoutBlockFlow::computeOverflow(LayoutUnit oldClientAfterEdge, bool recomputeFloats)
 {
     LayoutBlock::computeOverflow(oldClientAfterEdge, recomputeFloats);
     if (recomputeFloats || createsNewFormattingContext() || hasSelfPaintingLayer())
         addOverflowFromFloats();
 }
 
+void LayoutBlockFlow::computeSelfHitTestRects(Vector<LayoutRect>& rects, const LayoutPoint& layerOffset) const
+{
+    LayoutBlock::computeSelfHitTestRects(rects, layerOffset);
+
+    if (!hasHorizontalLayoutOverflow() && !hasVerticalLayoutOverflow())
+        return;
+
+    for (RootInlineBox* curr = firstRootBox(); curr; curr = curr->nextRootBox()) {
+        LayoutUnit top = std::max<LayoutUnit>(curr->lineTop(), curr->top());
+        LayoutUnit bottom = std::min<LayoutUnit>(curr->lineBottom(), curr->top() + curr->height());
+        LayoutRect rect(layerOffset.x() + curr->x(), layerOffset.y() + top, curr->width(), bottom - top);
+        // It's common for this rect to be entirely contained in our box, so exclude that simple case.
+        if (!rect.isEmpty() && (rects.isEmpty() || !rects[0].contains(rect)))
+            rects.append(rect);
+    }
+}
+
 RootInlineBox* LayoutBlockFlow::createAndAppendRootInlineBox()
 {
     RootInlineBox* rootBox = createRootInlineBox();
     m_lineBoxes.appendLineBox(rootBox);
 
     return rootBox;
 }
 
 void LayoutBlockFlow::deleteLineBoxTree()
 {
@@ skipping 1186 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);
     }
     return childrenOverflowChanged;
 }
 
 } // namespace blink