Remove crash signature that has not occurred in the last several hundred runs.

chrome/test/data/reliability/known_crashes.txt

Index: chrome/test/data/reliability/known_crashes.txt
diff --git a/chrome/test/data/reliability/known_crashes.txt b/chrome/test/data/reliability/known_crashes.txt
index b346fce7ef55ee5fc7d33a64be9d69d270f1ad1e..15df3fff024c34e5fdc3aaeeff96bc6199fcd3c2 100644
--- a/chrome/test/data/reliability/known_crashes.txt
+++ b/chrome/test/data/reliability/known_crashes.txt
@@ -143,9 +143,6 @@ PREFIX: webkit::webnode::document___autofill::formmanager::resetframe___rendervi
 # 74607
 PREFIX: webcore::renderstyle::getshadowverticalextent___webcore::inlineflowbox::addtextboxvisualoverflow___webcore::inlineflowbox::computeoverflow___webcore::renderblock::layoutinlinechildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutpositionedobjects___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::rendertablecell::layout___webcore::rendertablerow::layout___webcore::rendertablesection::layout___webcore::rendertable::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderblock::layoutblockchild___webcore::renderblock::layoutblockchildren___webcore::renderblock::layoutblock___webcore::renderblock::layout___webcore::renderview::layout___webcore::frameview::layout___webcore::frameview::updatelayoutandstyleifneededrecursive___renderwidget::dodeferredupdate___renderwidget::onupdaterectack___ipc::message::dispatch<renderview,renderview>___renderwidget::onmessagereceived___renderview::onmessagereceived___messagerouter::routemessage___messagerouter::onmessagereceived___childthread::onmessagereceived___runnablemethod<cancelablerequest<callbackrunner<tuple3<int,scoped_refptr<history::mostvisitedthumbnails>,bool> > >,void (__thiscall cancelablerequest<callbackrunner<tuple3<int,scoped_refptr<history::mostvisitedthumbnails>,bool> > >::*)(tuple3<int,scoped_refptr<history::mostvisitedthumbnails>,bool> const &),tuple1<tuple3<int,scoped_refptr<history::mostvisitedthumbnails>,bool> > >::run___messageloop::runtask___messageloop::dowork___base::messagepumpdefault::run___messageloop::runinternal___messageloop::run___renderermain___`anonymous namespace'::runnamedprocesstypemain___chromemain___maindllloader::launch___wwinmain_____tmaincrtstartup
 
-# 74926
-PREFIX: webcore::htmltreebuilder::constructtreefromatomictoken___webcore::htmltreebuilder::constructtreefromtoken___webcore::htmldocumentparser::pumptokenizer___webcore::htmldocumentparser::insert___webcore::htmldocumentparser::parsedocumentfragment___webcore::documentfragment::parsehtml___webcore::createfragmentfromsource___webcore::htmlelement::setinnerhtml___webcore::htmlelementinternal::innerhtmlattrsetter___v8::internal::jsobject::setpropertywithcallback___v8::internal::jsobject::setproperty___v8::internal::jsobject::setproperty___v8::internal::storeic::store___v8::internal::storeic_miss
-
 # 75352
 PREFIX: webcore::reportfatalerrorinv8___v8::internal::v8::fatalprocessoutofmemory___v8::internal::setelement___v8::internal::runtime::setobjectproperty___v8::internal::runtime_setproperty___v8::internal::invoke___v8::internal::execution::call___v8::script::run___webcore::v8proxy::runscript___webcore::v8proxy::evaluate___webcore::scriptcontroller::evaluate___webcore::scriptelement::executescript___webcore::scriptelement::preparescript___webcore::htmlscriptrunner::runscript___webcore::htmlscriptrunner::execute___webcore::htmldocumentparser::runscriptsforpausedtreebuilder___webcore::htmldocumentparser::cantakenexttoken___webcore::htmldocumentparser::pumptokenizer___webcore::htmldocumentparser::resumeparsingafterscriptexecution___webcore::htmldocumentparser::notifyfinished___webcore::cachedscript::checknotify___webcore::cachedscript::data___webcore::cachedresourcerequest::didfinishloading___webcore::subresourceloader::didfinishloading___webcore::resourceloader::didfinishloading___webcore::resourcehandleinternal::didfinishloading___webkit_glue::weburlloaderimpl::context::oncompletedrequest___resourcedispatcher::onrequestcomplete___ipc::messagewithtuple<tuple4<int,net::urlrequeststatus,std::basic_string<char,std::char_traits<char>,std::allocator<char> >,base::time> >::dispatch<resourcedispatcher,resourcedispatcher,void (__thiscall resourcedispatcher::*)(int,net::urlrequeststatus const &,std::basic_string<char,std::char_traits<char>,std::allocator<char> > const &,base::time const &)>___resourcedispatcher::dispatchmessagew___resourcedispatcher::onmessagereceived___childthread::onmessagereceived___runnablemethod<cancelablerequest<callbackrunner<tuple2<int,std::vector<history::mostvisitedurl,std::allocator<history::mostvisitedurl> > > > >,void (__thiscall cancelablerequest<callbackrunner<tuple2<int,std::vector<history::mostvisitedurl,std::allocator<history::mostvisitedurl> > > > >::*)(tuple2<int,std::vector<history::mostvisitedurl,std::allocator<history::mostvisitedurl> > > const &),tuple1<tuple2<int,std::vector<history::mostvisitedurl,std::allocator<history::mostvisitedurl> > > > >::run___messageloop::runtask___messageloop::dowork___base::messagepumpdefault::run___messageloop::runinternal___messageloop::run___renderermain___`anonymous namespace'::runnamedprocesstypemain___chromemain___maindllloader::launch___wwinmain_____tmaincrtstartup