[Qt] Remove references to PagePointer in the FrameNetworkingContext

[Qt] Remove references to PagePointer in the FrameNetworkingContext
https://bugs.webkit.org/show_bug.cgi?id=76342

Patch by Alexander Færøy <alexander.faeroy@nokia.com> on 2012-01-16
Reviewed by Simon Hausmann.

* WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp:
(WebKit::WebFrameLoaderClient::createNetworkingContext):
* WebProcess/qt/QtNetworkAccessManager.cpp:
(WebKit::QtNetworkAccessManager::obtainOriginatingWebPage):
* WebProcess/qt/QtNetworkAccessManager.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105062 268f45cc-cd09-0410-ab3c-d52691b4dbfc