https://bugs.webkit.org/show_bug.cgi?id=120327

Reviewed by Andreas Kling.

While in the area I also:
  - Reference-ified Editor::killRing().
  - Const-ified Editor::m_killRing, Editor::m_spellChecker, and Editor::m_alternativeTextController.

* editing/AlternativeTextController.cpp:
(WebCore::AlternativeTextController::AlternativeTextController):
(WebCore::AlternativeTextController::stopPendingCorrection):
(WebCore::AlternativeTextController::isSpellingMarkerAllowed):
(WebCore::AlternativeTextController::applyAlternativeTextToRange):
(WebCore::AlternativeTextController::applyAutocorrectionBeforeTypingIfAppropriate):
(WebCore::AlternativeTextController::respondToUnappliedSpellCorrection):
(WebCore::AlternativeTextController::timerFired):
(WebCore::AlternativeTextController::handleAlternativeTextUIResult):
(WebCore::AlternativeTextController::rootViewRectForRange):
(WebCore::AlternativeTextController::respondToChangedSelection):
(WebCore::AlternativeTextController::respondToAppliedEditing):
(WebCore::AlternativeTextController::respondToUnappliedEditing):
(WebCore::AlternativeTextController::alternativeTextClient):
(WebCore::AlternativeTextController::editorClient):
(WebCore::AlternativeTextController::markPrecedingWhitespaceForDeletedAutocorrectionAfterCommand):
(WebCore::AlternativeTextController::processMarkersOnTextToBeReplacedByResult):
(WebCore::AlternativeTextController::respondToMarkerAtEndOfWord):
(WebCore::AlternativeTextController::insertDictatedText):
(WebCore::AlternativeTextController::applyDictationAlternative):
* editing/AlternativeTextController.h:
(WebCore::AlternativeTextController::UNLESS_ENABLED):
* editing/Editor.cpp:
(WebCore::Editor::Editor):
(WebCore::Editor::addToKillRing):
* editing/Editor.h:
(WebCore::Editor::killRing):
* editing/EditorCommand.cpp:
(WebCore::executeYank):
(WebCore::executeYankAndSelect):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@154648 268f45cc-cd09-0410-ab3c-d52691b4dbfc