Remove fixed issue 16276 from known crashes list.

chrome/test/data/reliability/known_crashes.txt

Index: chrome/test/data/reliability/known_crashes.txt
===================================================================
--- chrome/test/data/reliability/known_crashes.txt	(revision 20610)
+++ chrome/test/data/reliability/known_crashes.txt	(working copy)
@@ -65,9 +65,6 @@
 # 12156
 SUBSTRING : views::focuswindowcallback___base::messagepumpforui::dorunloop
 
-# 16276
-PREFIX : v8::internal::jsobject::locallookup___v8::internal::jsobject::lookup___v8::internal::object::lookup
-
 # 9947
 SUBSTRING : webcore::frameloader::didreceiveresponse___webcore::resourceloader::didreceiveresponse___webcore::subresourceloader::didreceiveresponse___webcore::resourceloader::didreceiveresponse___webcore::resourcehandleinternal::onreceivedresponse
 
@@ -78,4 +75,4 @@
 SUBSTRING : windowdragresponsetask::run___messageloop::runtask___messageloop::dowork
 
 # 16582
-PREFIX : tabcontentsviewwin::setpagetitle___tabcontents::updatetitleforentry___tabcontents::updatetitle___renderviewhost::onmsgupdatetitle___ipc::messagewithtuple
+PREFIX : tabcontentsviewwin::setpagetitle___tabcontents::updatetitleforentry___tabcontents::updatetitle___renderviewhost::onmsgupdatetitle___ipc::messagewithtuple