Use layout units in PinchViewport::scrollIntoView.

Source/core/frame/PinchViewport.h

Index: Source/core/frame/PinchViewport.h
diff --git a/Source/core/frame/PinchViewport.h b/Source/core/frame/PinchViewport.h
index c7938c73198b5eef2852ce067c363ad02c73c710..f26ebae0a0d80cf5c6138ffa4d53a3112abe656c 100644
--- a/Source/core/frame/PinchViewport.h
+++ b/Source/core/frame/PinchViewport.h
@@ -119,7 +119,7 @@ public:
     // Scroll the main frame and pinch viewport so that the given rect in the
     // top-level document is centered in the viewport. This method will avoid
     // scrolling the pinch viewport unless necessary.
-    void scrollIntoView(const FloatRect&);
+    void scrollIntoView(const LayoutRect&);
 
     // Clamp the given point, in document coordinates, to the maximum/minimum
     // scroll extents of the viewport within the document.