Bug 55676

A bunch of tests started to either fail or crash (in debug mode) after r80219: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20chromium.org&tests=http%2Ftests%2Fmedia%2Fvideo-referer.html%2Chttp%2Ftests%2Fmedia%2Fvideo-error-abort.html%2Cplugins%2Freturn-error-from-new-stream-callback-in-full-frame-plugin.html%2Chttp%2Ftests%2Fcanvas%2Fwebgl%2Forigin-clean-conformance.html%2Chttp%2Ftests%2Fmedia%2Fvideo-cookie.html%2Chttp%2Ftests%2Fsecurity%2Flocal-video-source-from-remote.html Stack from the Windows debug bot for http/tests/media/video-referer.html Backtrace: WebKit::AssociatedURLLoader::ClientAdapter::didFinishLoading [0x009EF163+147] (e:\b\build\slave\webkit_win__dbg__2_\build\src\third_party\webkit\source\webkit\chromium\src\associatedurlloader.cpp:128) WebCore::DocumentThreadableLoader::didFinishLoading [0x013C8E13+163] (e:\b\build\slave\webkit_win__dbg__2_\build\src\third_party\webkit\source\webcore\loader\documentthreadableloader.cpp:270) WebCore::DocumentThreadableLoader::didFinishLoading [0x013C8D60+144] (e:\b\build\slave\webkit_win__dbg__2_\build\src\third_party\webkit\source\webcore\loader\documentthreadableloader.cpp:261) WebCore::SubresourceLoader::didFinishLoading [0x016CFCB1+161] (e:\b\build\slave\webkit_win__dbg__2_\build\src\third_party\webkit\source\webcore\loader\subresourceloader.cpp:181) WebCore::ResourceLoader::didFinishLoading [0x015EA8E7+39] (e:\b\build\slave\webkit_win__dbg__2_\build\src\third_party\webkit\source\webcore\loader\resourceloader.cpp:436) WTF::VectorMover<0,WebCore::ApplicationCacheHost::ResourceInfo>::move [0x021004F0+1936] webkit_glue::WebURLLoaderImpl::Context::OnCompletedRequest [0x00AFF0DB+523] (e:\b\build\slave\webkit_win__dbg__2_\build\src\webkit\glue\weburlloader_impl.cc:655) `anonymous namespace'::RequestProxy::NotifyCompletedRequest [0x00A843B9+57] (e:\b\build\slave\webkit_win__dbg__2_\build\src\webkit\tools\test_shell\simple_resource_loader_bridge.cc:295) [0x00A8B4C1+33] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\tuple.h:564) [0x00A89C85+53] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\task.h:331) MessageLoop::RunTask [0x01CB0B10+272] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\message_loop.cc:367) MessageLoop::DeferOrRunPendingTask [0x01CB0C45+53] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\message_loop.cc:379) MessageLoop::DoWork [0x01CB175C+236] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\message_loop.cc:569) base::MessagePumpForUI::DoRunLoop [0x01CFE464+84] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\message_pump_win.cc:201) base::MessagePumpWin::RunWithDispatcher [0x01CFDCD2+130] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\message_pump_win.cc:49) base::MessagePumpWin::Run [0x01CFDF3C+28] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\message_pump_win.h:79) MessageLoop::RunInternal [0x01CB0957+247] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\message_loop.cc:342) MessageLoop::RunHandler [0x01CB072E+46] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\message_loop.cc:316) MessageLoop::Run [0x01CB003A+58] (e:\b\build\slave\webkit_win__dbg__2_\build\src\base\message_loop.cc:240) webkit_support::RunMessageLoop [0x008AB3DF+15] (e:\b\build\slave\webkit_win__dbg__2_\build\src\webkit\support\webkit_support.cc:360) TestShell::waitTestFinished [0x00428E6D+141] (e:\b\build\slave\webkit_win__dbg__2_\build\src\third_party\webkit\tools\dumprendertree\chromium\testshellwin.cpp:106) TestShell::runFileTest [0x0044235F+447] (e:\b\build\slave\webkit_win__dbg__2_\build\src\third_party\webkit\tools\dumprendertree\chromium\testshell.cpp:196) runTest [0x00419A9D+733] (e:\b\build\slave\webkit_win__dbg__2_\build\src\third_party\webkit\tools\dumprendertree\chromium\dumprendertree.cpp:119) main [0x00419365+1717] (e:\b\build\slave\webkit_win__dbg__2_\build\src\third_party\webkit\tools\dumprendertree\chromium\dumprendertree.cpp:214) __tmainCRTStartup [0x00A29FB7+279] (f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:266) mainCRTStartup [0x00A29E8F+15] (f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c:182)