Move hit testing of lines and floats to LayoutBlockFlow.

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

Index: third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
index 99626fdfd55997471a2d2c2f271d68ed95890f15..c42d683276c632aa1ff5ec5a07da671547a5a5b0 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBlockFlow.h
@@ -327,6 +327,8 @@ protected:
 
     PaintInvalidationReason invalidatePaintIfNeeded(const PaintInvalidationState&) override;
 
+    bool hitTestChildren(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
+
 private:
     bool layoutBlockFlow(bool relayoutChildren, LayoutUnit& pageLogicalHeight, SubtreeLayoutScope&);
     void layoutBlockChildren(bool relayoutChildren, SubtreeLayoutScope&, LayoutUnit beforeEdge, LayoutUnit afterEdge);
@@ -357,7 +359,7 @@ private:
 
     LayoutUnit lowestFloatLogicalBottom(FloatingObject::Type = FloatingObject::FloatLeftRight) const;
 
-    bool hitTestFloats(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset) final;
+    bool hitTestFloats(HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset);
 
     void invalidatePaintForOverhangingFloats(bool paintAllDescendants) final;
     void invalidatePaintForOverflow() final;