https://bugs.webkit.org/show_bug.cgi?id=127154

Reviewed by David Hyatt.

I modified MidpointState to behave like a class, updated the call sites also.

No new tests, no behavior change.

* platform/text/BidiResolver.h:
(WebCore::MidpointState::reset):
(WebCore::MidpointState::startIgnoringSpaces):
(WebCore::MidpointState::stopIgnoringSpaces):
(WebCore::MidpointState::midpoints):
(WebCore::MidpointState::numMidpoints):
(WebCore::MidpointState::currentMidpoint):
(WebCore::MidpointState::incrementCurrentMidpoint):
(WebCore::MidpointState::decreaseNumMidpoints):
(WebCore::MidpointState::betweenMidpoints):
(WebCore::MidpointState::setBetweenMidpoints):
(WebCore::MidpointState::addMidpoint): Renamed from deprecatedAddMidpoint, since now
its private, we no longer need to discourage callers from using it.
* rendering/InlineIterator.h:
(WebCore::IsolateTracker::addFakeRunIfNecessary):
* rendering/RenderBlockLineLayout.cpp:
(WebCore::RenderBlockFlow::appendRunsForObject):
(WebCore::constructBidiRunsForLine):
* rendering/line/BreakingContextInlineHeaders.h:
(WebCore::checkMidpoints):
* rendering/line/TrailingObjects.cpp:
(WebCore::TrailingObjects::updateMidpointsForTrailingBoxes):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@162472 268f45cc-cd09-0410-ab3c-d52691b4dbfc