https://bugs.webkit.org/show_bug.cgi?id=74926

Reviewed by Simon Hausmann.

Source/WebCore:

Make GestureAnimations depend on the GESTURE_ANIMATION feature flag,
since GestureAnimations are unused on some platforms.

* Target.pri:
* platform/ScrollAnimatorNone.cpp:
(WebCore::ScrollAnimatorNone::fireUpAnAnimation):
(WebCore::ScrollAnimatorNone::cancelAnimations):
(WebCore::ScrollAnimatorNone::animationTimerFired):
* platform/ScrollAnimatorNone.h:
(ScrollAnimatorNone):

Source/WebKit/qt:

Expose the enable scroll animator setting.

* Api/qwebsettings.cpp:
(QWebSettingsPrivate::apply):
(QWebSettings::QWebSettings):
* Api/qwebsettings.h:

Source/WebKit2:

Expose scroll-animator preference, but ensure animated smooth scrolling
on the web process side is disabled when scrolling has been delegated
to the UI process.

* Shared/WebPreferencesStore.h:
* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::setResizesToContentsUsingLayoutSize):
(WebKit::WebPage::updatePreferences):

Source/WTF:

Initialize GESTURE_ANIMATION feature flag.

* wtf/Platform.h:

Tools:

Enabled SMOOTH_SCROLLING on Qt, and expose the enable scroll animator
setting in QtTestBrowser so it can be tested.

* QtTestBrowser/launcherwindow.cpp:
(LauncherWindow::createChrome):
(LauncherWindow::toggleScrollAnimator):
* QtTestBrowser/launcherwindow.h:
(WindowOptions::WindowOptions):
(WindowOptions):
(LauncherWindow):
* qmake/mkspecs/features/features.pri:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@126291 268f45cc-cd09-0410-ab3c-d52691b4dbfc