Should remove |struct HitRegionOptionsInternal|.

Source/core/html/canvas/CanvasRenderingContext2D.h

Index: Source/core/html/canvas/CanvasRenderingContext2D.h
diff --git a/Source/core/html/canvas/CanvasRenderingContext2D.h b/Source/core/html/canvas/CanvasRenderingContext2D.h
index 352c573ba6cdcc67ec5a12e46032c22b8c58293a..475d0d7804880ee578e363b923a54c921667ca67 100644
--- a/Source/core/html/canvas/CanvasRenderingContext2D.h
+++ b/Source/core/html/canvas/CanvasRenderingContext2D.h
@@ -60,7 +60,6 @@ class GraphicsContext;
 class HTMLCanvasElement;
 class HTMLImageElement;
 class HTMLVideoElement;
-class HitRegionOptions;
 class ImageData;
 class TextMetrics;
 
@@ -353,7 +352,6 @@ private:
     bool focusRingCallIsValid(const Path&, Element*);
     void drawFocusRing(const Path&);
 
-    void addHitRegionInternal(const HitRegionOptionsInternal&, ExceptionState&);
     bool hasClip() { return state().m_hasClip; }
 
     void validateStateStack();