Reviewed by Dan Bernstein.

        Remove some obsolete scrolling code
        https://bugs.webkit.org/show_bug.cgi?id=38293

        * page/Chrome.cpp:
        (WebCore::Chrome::scrollRectIntoView): Removed ScrollView* argument.
        * page/Chrome.h: Made scrollRectIntoView non-virtual, and removed ScrollView* argument.

        * page/FrameView.cpp: Removed scrollRectIntoViewRecursively.
        * page/FrameView.h: Removed scrollRectIntoViewRecursively and made
        setScrollPosition non-virtual, since there is no class derived from
        this class, and ScrollView's setScrollPosition is non-virtual.

        * platform/HostWindow.h: Removed scrollRectIntoView.

        * platform/ScrollView.cpp:
        (WebCore::ScrollView::scrollRectIntoViewRecursively): Updated comment
        since I was able to do most of the tasks listed here.

        * rendering/RenderLayer.cpp:
        (WebCore::RenderLayer::scrollRectToVisible): Removed 0 passed for
        ScrollView* argument to Chrome::scrollRectIntoView.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@58445 268f45cc-cd09-0410-ab3c-d52691b4dbfc