Moving HitTest function to DeprecatedPaintLayerStackingNode.

Source/core/paint/DeprecatedPaintLayer.h

Index: Source/core/paint/DeprecatedPaintLayer.h
diff --git a/Source/core/paint/DeprecatedPaintLayer.h b/Source/core/paint/DeprecatedPaintLayer.h
index 960ff62ac2d6533ed9404b150a7d1e737df3a6ad..82cb7d2bb6d07186584b046c0c18cf6838fab414 100644
--- a/Source/core/paint/DeprecatedPaintLayer.h
+++ b/Source/core/paint/DeprecatedPaintLayer.h
@@ -230,10 +230,6 @@ public:
     // http://www.chromium.org/developers/design-documents/multi-column-layout for more info.
     LayoutPoint visualOffsetFromAncestor(const DeprecatedPaintLayer* ancestorLayer) const;
 
-    // The hitTest() method looks for mouse events by walking layers that intersect the point from front to back.
-    bool hitTest(HitTestResult&);
-    bool hitTest(const HitTestRequest&, const HitTestLocation&, HitTestResult&);
-
     // Pass offsetFromRoot if known.
     bool intersectsDamageRect(const LayoutRect& layerBounds, const LayoutRect& damageRect, const DeprecatedPaintLayer* rootLayer, const LayoutPoint* offsetFromRoot = 0) const;
 
@@ -532,6 +528,10 @@ public:
     static LayoutRect transparencyClipBox(const DeprecatedPaintLayer*, const DeprecatedPaintLayer* rootLayer, TransparencyClipBoxBehavior transparencyBehavior,
         TransparencyClipBoxMode transparencyMode, const LayoutSize& subPixelAccumulation, PaintBehavior = 0);
 
+    DeprecatedPaintLayer* hitTestLayer(DeprecatedPaintLayer* rootLayer, DeprecatedPaintLayer* containerLayer, HitTestResult&,

[Julien - ping for review, 2015/06/05 00:46:54]

I would assume we would want to pass |const DeprecatedPaintLayer*| in this
function. Any reason why it's not the case? (this is a follow-up change btw)

[chadarmstrong, 2015/06/05 17:24:34]

Acknowledged.

+        const LayoutRect& hitTestRect, const HitTestLocation&, bool appliedTransform,
+        const HitTestingTransformState* = 0, double* zOffset = 0);
+
 private:
     // Bounding box in the coordinates of this layer.
     LayoutRect logicalBoundingBox() const;
@@ -552,9 +552,6 @@ private:
     void setLastChild(DeprecatedPaintLayer* last) { m_last = last; }
 
     void updateHasSelfPaintingLayerDescendant() const;
-    DeprecatedPaintLayer* hitTestLayer(DeprecatedPaintLayer* rootLayer, DeprecatedPaintLayer* containerLayer, HitTestResult&,
-        const LayoutRect& hitTestRect, const HitTestLocation&, bool appliedTransform,
-        const HitTestingTransformState* = 0, double* zOffset = 0);
     DeprecatedPaintLayer* hitTestLayerByApplyingTransform(DeprecatedPaintLayer* rootLayer, DeprecatedPaintLayer* containerLayer, HitTestResult&,
         const LayoutRect& hitTestRect, const HitTestLocation&, const HitTestingTransformState* = 0, double* zOffset = 0,
         const LayoutPoint& translationOffset = LayoutPoint());