https://bugs.webkit.org/show_bug.cgi?id=122309

Reviewed by Andreas Kling.

../WebCore: 

* loader/EmptyClients.h:
* page/ChromeClient.h:
* page/FrameView.cpp:
* page/FrameView.h:
* platform/ScrollableArea.h:
* platform/mac/ScrollAnimatorMac.mm:
(WebCore::ScrollAnimatorMac::shouldRubberBandInDirection):

../WebKit/efl: 

* WebCoreSupport/ChromeClientEfl.h:

../WebKit/gtk: 

* WebCoreSupport/ChromeClientGtk.h:

../WebKit/mac: 

* WebCoreSupport/WebChromeClient.h:

../WebKit/win: 

* WebCoreSupport/WebChromeClient.h:

../WebKit/wince: 

* WebCoreSupport/ChromeClientWinCE.h:

../WebKit2: 

WKBundlePageUIClient's shouldRubberBandInDirection has never worked with
threaded scrolling, so remove it.

* WebProcess/InjectedBundle/API/c/WKBundlePage.h:
* WebProcess/InjectedBundle/InjectedBundlePageUIClient.cpp:
* WebProcess/InjectedBundle/InjectedBundlePageUIClient.h:
* WebProcess/WebCoreSupport/WebChromeClient.cpp:
* WebProcess/WebCoreSupport/WebChromeClient.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156871 268f45cc-cd09-0410-ab3c-d52691b4dbfc