Less duplicated code between nodeAtPoint() in LayoutBox and LayoutBlock.

third_party/WebKit/Source/core/layout/LayoutBox.h

Index: third_party/WebKit/Source/core/layout/LayoutBox.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.h b/third_party/WebKit/Source/core/layout/LayoutBox.h
index 7c7e4cc71b880abda77f470318c411f4334ddb4d..219d5b802c9df7e44de8747a9a60efcca29004e7 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.h
@@ -785,6 +785,8 @@ public:
     virtual int firstLineBoxBaseline() const { return -1; }
     virtual int inlineBlockBaseline(LineDirectionMode) const { return -1; } // Returns -1 if we should skip this box when computing the baseline of an inline-block.
 
+    virtual Node* nodeForHitTest() const { return node(); }
+
     bool shrinkToAvoidFloats() const;
     virtual bool avoidsFloats() const;
 
@@ -1039,7 +1041,8 @@ private:
     // Returns true if the box intersects the viewport visible to the user.
     bool intersectsVisibleViewport();
 
-    bool hitTestChildren(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction);
+    virtual bool isInSelfHitTestingPhase(HitTestAction hitTestAction) const { return hitTestAction == HitTestForeground; }
+    virtual bool hitTestChildren(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction);
 
     void updateBackgroundAttachmentFixedStatusAfterStyleChange();