[EFL] Remove m_contentPosition from PageViewportControllerClientEfl
https://bugs.webkit.org/show_bug.cgi?id=132774

Reviewed by Anders Carlsson.

m_contentPosition is not used anywhere. So, this patch removes
m_contentPosition and reduces one unnecessary assignment in
setViewportPosition. Also, it renames contentsPoint to contentsPosition.

* UIProcess/PageViewportControllerClient.h:
* UIProcess/efl/PageViewportControllerClientEfl.cpp:
(WebKit::PageViewportControllerClientEfl::setViewportPosition):
* UIProcess/efl/PageViewportControllerClientEfl.h:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@169003 268f45cc-cd09-0410-ab3c-d52691b4dbfc
We shouldn't make a ScrollingThread on iOS.
<https://webkit.org/b/133038>
<rdar://problem/16947589>

Don't call ScrollingThred::dispatch() from the pressure relief
code on iOS since that will end up instantiating a scrolling thread
which we'd otherwise never have.

Reviewed by Sam Weinig.

* platform/MemoryPressureHandler.cpp:
(WebCore::MemoryPressureHandler::releaseMemory):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@169004 268f45cc-cd09-0410-ab3c-d52691b4dbfc