https://bugs.webkit.org/show_bug.cgi?id=112850

Reviewed by Andreas Kling.

Removes direct references to WebPageProxy from QQuickWebPage and prepares the
class for the move to QRawWebView. The access to the device scale factor and
CoordinatedGraphicsScene is provided through QQuickWebViewPrivate, and therefore
accessors to these properties are temporarily added. Eventually, this access will
be provided through QRawWebView when the move is complete.

This also moves the pointer to QtWebPageEventHandler from QQuickWebPagePrivate
to QQuickWebViewPrivate as it is mainly used from there.

* UIProcess/API/qt/qquickwebpage.cpp:
(QQuickWebPagePrivate::QQuickWebPagePrivate):
(QQuickWebPagePrivate::paint):
(QQuickWebPage::updatePaintNode):
* UIProcess/API/qt/qquickwebpage_p.h:
* UIProcess/API/qt/qquickwebpage_p_p.h:
(QQuickWebPagePrivate):
* UIProcess/API/qt/qquickwebview.cpp:
(QQuickWebViewPrivate::initialize):
(QQuickWebViewPrivate::handleMouseEvent):
(QQuickWebViewPrivate::processDidCrash):
(QQuickWebViewPrivate::coordinatedGraphicsScene):
(QQuickWebViewPrivate::deviceScaleFactor):
(QQuickWebViewPrivate::setIntrinsicDeviceScaleFactor):
(QQuickWebViewFlickablePrivate::onComponentComplete):
(QQuickWebView::keyPressEvent):
(QQuickWebView::keyReleaseEvent):
(QQuickWebView::inputMethodEvent):
(QQuickWebView::focusInEvent):
(QQuickWebView::itemChange):
(QQuickWebView::touchEvent):
(QQuickWebView::wheelEvent):
(QQuickWebView::hoverEnterEvent):
(QQuickWebView::hoverMoveEvent):
(QQuickWebView::hoverLeaveEvent):
(QQuickWebView::dragMoveEvent):
(QQuickWebView::dragEnterEvent):
(QQuickWebView::dragLeaveEvent):
(QQuickWebView::dropEvent):
* UIProcess/API/qt/qquickwebview_p_p.h:
(WebCore):
(WebKit):
(QQuickWebViewPrivate):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148011 268f45cc-cd09-0410-ab3c-d52691b4dbfc