[Qt] Tiling: Improve the method names dealing with moving and scaling.

[Qt] Tiling: Improve the method names dealing with moving and scaling.

Rubberstamped by Simon Hausmann.

* UIProcess/API/qt/qquickwebview.cpp:
(QQuickWebViewLegacyPrivate::updateViewportSize):
(QQuickWebViewFlickablePrivate::onComponentComplete):
(QQuickWebViewFlickablePrivate::updateViewportSize):
(QQuickWebViewFlickablePrivate::_q_commitScaleChange):
(QQuickWebViewPrivate::_q_commitPositionChange):
(QQuickWebViewFlickablePrivate::_q_resume):
* UIProcess/API/qt/qquickwebview_p.h:
* UIProcess/API/qt/qquickwebview_p_p.h:
(QQuickWebViewPrivate):
(QQuickWebViewPrivate::_q_commitScaleChange):
(QQuickWebViewFlickablePrivate):
* UIProcess/DrawingAreaProxy.h:
(WebKit::DrawingAreaProxy::setVisibleContentsRectForScaling):
(WebKit::DrawingAreaProxy::setVisibleContentsRectForPanning):
* UIProcess/DrawingAreaProxyImpl.cpp:
(WebKit::DrawingAreaProxyImpl::setVisibleContentsRectForScaling):
(WebKit::DrawingAreaProxyImpl::setVisibleContentsRectForPanning):
* UIProcess/DrawingAreaProxyImpl.h:
(DrawingAreaProxyImpl):
* UIProcess/LayerTreeHostProxy.h:
(LayerTreeHostProxy):
* UIProcess/qt/LayerTreeHostProxyQt.cpp:
(WebKit::LayerTreeHostProxy::setVisibleContentsRectForPanning):
(WebKit::LayerTreeHostProxy::setVisibleContentsRectForScaling):
* UIProcess/qt/QtViewportInteractionEngine.cpp:
(WebKit::ViewportUpdateDeferrer::~ViewportUpdateDeferrer):
(WebKit::QtViewportInteractionEngine::flickableMovingPositionUpdate):
(WebKit::QtViewportInteractionEngine::wheelEvent):
(WebKit::QtViewportInteractionEngine::pinchGestureStarted):
* UIProcess/qt/QtViewportInteractionEngine.h:
(QtViewportInteractionEngine):
* WebProcess/WebPage/LayerTreeHost.h:
(WebKit::LayerTreeHost::setVisibleContentsRectForScaling):
(WebKit::LayerTreeHost::setVisibleContentsRectForPanning):
(WebKit::LayerTreeHost::setVisibleContentsRectForLayer):
* WebProcess/WebPage/LayerTreeHost.messages.in:
* WebProcess/WebPage/qt/LayerTreeHostQt.cpp:
(WebKit::LayerTreeHostQt::setVisibleContentsRectForScaling):
(WebKit::LayerTreeHostQt::setVisibleContentsRectForPanning):
* WebProcess/WebPage/qt/LayerTreeHostQt.h:
(LayerTreeHostQt):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108771 268f45cc-cd09-0410-ab3c-d52691b4dbfc