Oilpan: Build fix after r179181

m_autoTextsizer is gone in r179181. This CL removes the leftover.

TBR=pdr@chromium.org

Review URL: https://codereview.chromium.org/423293003

git-svn-id: svn://svn.chromium.org/blink/trunk@179184 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/dom/Document.cpp

@@ -5850,7 +5850,6 @@ void Document::trace(Visitor* visitor)
     visitor->trace(m_styleSheetList);
     visitor->trace(m_mediaQueryMatcher);
     visitor->trace(m_scriptedAnimationController);
-    visitor->trace(m_textAutosizer);
     visitor->trace(m_fastTextAutosizer);
     visitor->trace(m_registrationContext);
     visitor->trace(m_customElementMicrotaskRunQueue);