crash log for renderer (pid 10260):
STDOUT: #CRASHED - renderer (pid 10260)
STDERR: ASSERTION FAILED: m_lastRemainingAllocationSize == remainingAllocationSize()
STDERR: ../../third_party/WebKit/Source/platform/heap/HeapPage.cpp(676) : void blink::NormalPageHeap::updateRemainingAllocationSize()
STDERR: 1   0x11077cfa9 blink::NormalPageHeap::updateRemainingAllocationSize()
STDERR: 2   0x11077d173 blink::NormalPageHeap::outOfLineAllocate(unsigned long, unsigned long)
STDERR: 3   0x1252ee37b blink::NormalPageHeap::allocateObject(unsigned long, unsigned long)
STDERR: 4   0x12615de44 blink::Member<blink::StyleRuleKeyframes>* blink::HeapAllocator::allocateVectorBacking<blink::Member<blink::StyleRuleKeyframes> >(unsigned long)
STDERR: 5   0x12615da8d WTF::VectorBufferBase<blink::Member<blink::StyleRuleKeyframes>, false, blink::HeapAllocator>::allocateBuffer(unsigned long)
STDERR: 6   0x12624d35c WTF::VectorBuffer<blink::Member<blink::StyleRuleKeyframes>, 0ul, blink::HeapAllocator>::VectorBuffer(unsigned long)
STDERR: 7   0x12624d2a2 WTF::Vector<blink::Member<blink::StyleRuleKeyframes>, 0ul, blink::HeapAllocator>::Vector(WTF::Vector<blink::Member<blink::StyleRuleKeyframes>, 0ul, blink::HeapAllocator> const&)
STDERR: 8   0x12624d23e blink::HeapVector<blink::Member<blink::StyleRuleKeyframes>, 0ul>::HeapVector(blink::HeapVector<blink::Member<blink::StyleRuleKeyframes>, 0ul> const&)
STDERR: 9   0x12624bf1b blink::HeapVector<blink::Member<blink::StyleRuleKeyframes>, 0ul>::HeapVector(blink::HeapVector<blink::Member<blink::StyleRuleKeyframes>, 0ul> const&)
STDERR: 10  0x12624a8be blink::ScopedStyleResolver::addKeyframeRules(blink::RuleSet const&)
STDERR: 11  0x12624ae31 blink::ScopedStyleResolver::appendCSSStyleSheet(blink::CSSStyleSheet&, blink::MediaQueryEvaluator const&)
STDERR: 12  0x12627224f blink::StyleResolver::appendCSSStyleSheet(blink::CSSStyleSheet&)
STDERR: 13  0x1262722fe blink::StyleResolver::appendPendingAuthorStyleSheets()
STDERR: 14  0x126b948cd blink::StyleEngine::ensureResolver()
STDERR: 15  0x126d063ce blink::StyleEngine::attributeChangedForElement(blink::QualifiedName const&, blink::Element&)
STDERR: 16  0x12613b690 blink::AbstractPropertySetCSSStyleDeclaration::setPropertyInternal(blink::CSSPropertyID, WTF::String const&, bool, blink::ExceptionState&)
STDERR: 17  0x1252dfb83 blink::V8CSSStyleDeclaration::namedPropertySetterCustom(v8::Local<v8::Name>, v8::Local<v8::Value>, v8::PropertyCallbackInfo<v8::Value> const&)
STDERR: 18  0x1257327e2 blink::CSSStyleDeclarationV8Internal::namedPropertySetterCallback(v8::Local<v8::Name>, v8::Local<v8::Value>, v8::PropertyCallbackInfo<v8::Value> const&)
STDERR: 19  0x11f50de20 v8::internal::PropertyCallbackArguments::Call(void (*)(v8::Local<v8::Name>, v8::Local<v8::Value>, v8::PropertyCallbackInfo<v8::Value> const&), v8::Local<v8::Name>, v8::Local<v8::Value>)
STDERR: 20  0x11f90b328 v8::internal::JSObject::SetPropertyWithInterceptor(v8::internal::LookupIterator*, v8::internal::Handle<v8::internal::Object>)
STDERR: 21  0x11f90b78b v8::internal::Object::SetPropertyInternal(v8::internal::LookupIterator*, v8::internal::Handle<v8::internal::Object>, v8::internal::LanguageMode, v8::internal::Object::StoreFromKeyed, bool*)
STDERR: 22  0x11f90b5fb v8::internal::Object::SetProperty(v8::internal::Handle<v8::internal::Object>, v8::internal::Handle<v8::internal::Name>, v8::internal::Handle<v8::internal::Object>, v8::internal::LanguageMode, v8::internal::Object::StoreFromKeyed)
STDERR: 23  0x11f89718b v8::internal::Runtime_StorePropertyWithInterceptor(int, v8::internal::Object**, v8::internal::Isolate*)
STDERR: 24  0x36dd7d5062db
STDERR: Received signal 11 SEGV_MAPERR 0000fbadbeef
STDERR:  [0x00010db6d95f]
STDERR:  [0x00010db6d9b3]
STDERR:  [0x00010db6d8f6]
STDERR:  [0x7fff8e7d65aa]
STDERR:  [0x7fff66ae2648]
STDERR:  [0x00011077d173]
STDERR:  [0x0001252ee37b]
STDERR:  [0x00012615de44]
STDERR:  [0x00012615da8d]
STDERR:  [0x00012624d35c]
STDERR:  [0x00012624d2a2]
STDERR:  [0x00012624d23e]
STDERR:  [0x00012624bf1b]
STDERR:  [0x00012624a8be]
STDERR:  [0x00012624ae31]
STDERR:  [0x00012627224f]
STDERR:  [0x0001262722fe]
STDERR:  [0x000126b948cd]
STDERR:  [0x000126d063ce]
STDERR:  [0x00012613b690]
STDERR:  [0x0001252dfb83]
STDERR:  [0x0001257327e2]
STDERR:  [0x00011f50de20]
STDERR:  [0x00011f90b328]
STDERR:  [0x00011f90b78b]
STDERR:  [0x00011f90b5fb]
STDERR:  [0x00011f89718b]
STDERR:  [0x36dd7d5062db]
STDERR: [end of stack trace]