crash log for renderer (pid 29610):
STDOUT: <empty>
STDERR: [29610:1287:0220/084400:32491938234623:INFO:GrAAConvexPathRenderer.cpp(808)] ../../third_party/skia/src/gpu/GrAAConvexPathRenderer.cpp:808: failed assertion "args.fDevBounds.contains(actualBounds)"
STDERR: 
STDERR: [29610:1287:0220/084400:32491938283013:FATAL:GrAAConvexPathRenderer.cpp(808)] SK_CRASH
STDERR: 0   libbase.dylib                       0x00000001059f7f5f base::debug::StackTrace::StackTrace() + 47
STDERR: 1   libbase.dylib                       0x00000001059f7fb3 base::debug::StackTrace::StackTrace() + 35
STDERR: 2   libbase.dylib                       0x0000000105a58556 logging::LogMessage::~LogMessage() + 70
STDERR: 3   libbase.dylib                       0x0000000105a575a3 logging::LogMessage::~LogMessage() + 35
STDERR: 4   libskia.dylib                       0x00000001167d0c49 SkDebugf_FileLine(char const*, int, bool, char const*, ...) + 521
STDERR: 5   libskia.dylib                       0x00000001167fcdc4 AAConvexPathBatch::generateGeometry(GrBatchTarget*, GrPipeline const*) + 1172
STDERR: 6   libskia.dylib                       0x0000000116857018 GrInOrderDrawBuffer::DrawBatch::execute(GrInOrderDrawBuffer*, GrInOrderDrawBuffer::SetState const*) + 248
STDERR: 7   libskia.dylib                       0x00000001168580c3 GrInOrderDrawBuffer::closeBatch() + 99
STDERR: 8   libskia.dylib                       0x000000011685657d GrInOrderDrawBuffer::onFlush() + 93
STDERR: 9   libskia.dylib                       0x000000011684ac97 GrFlushToGpuDrawTarget::flush() + 439
STDERR: 10  libskia.dylib                       0x0000000116827ad0 GrContext::flush(int) + 112
STDERR: 11  libskia.dylib                       0x000000011682ea55 GrContext::readRenderTargetPixels(GrRenderTarget*, int, int, int, int, GrPixelConfig, void*, unsigned long, unsigned int) + 565
STDERR: 12  libskia.dylib                       0x0000000116966044 SkGpuDevice::onReadPixels(SkImageInfo const&, void*, unsigned long, int, int) + 324
STDERR: 13  libskia.dylib                       0x00000001164e55a9 SkBaseDevice::readPixels(SkImageInfo const&, void*, unsigned long, int, int) + 1161
STDERR: 14  libskia.dylib                       0x00000001164bee96 SkCanvas::readPixels(SkImageInfo const&, void*, unsigned long, int, int) + 230
STDERR: 15  libskia.dylib                       0x000000011678eba6 SkDeferredDevice::onReadPixels(SkImageInfo const&, void*, unsigned long, int, int) + 102
STDERR: 16  libskia.dylib                       0x00000001164e55a9 SkBaseDevice::readPixels(SkImageInfo const&, void*, unsigned long, int, int) + 1161
STDERR: 17  libskia.dylib                       0x00000001164bee96 SkCanvas::readPixels(SkImageInfo const&, void*, unsigned long, int, int) + 230
STDERR: 18  libblink_platform.dylib             0x0000000107498247 blink::GraphicsContext::readPixels(SkImageInfo const&, void*, unsigned long, int, int) + 199
STDERR: 19  libblink_platform.dylib             0x00000001074d19f8 blink::ImageBuffer::getImageData(blink::Multiply, blink::IntRect const&, WTF::ArrayBufferContents&) const + 776
STDERR: 20  libblink_web.dylib                  0x000000010a326007 blink::CanvasRenderingContext2D::getImageData(float, float, float, float, blink::ExceptionState&) const + 935
STDERR: 21  libblink_web.dylib                  0x000000010992f7e6 blink::CanvasRenderingContext2DV8Internal::getImageDataMethod(v8::FunctionCallbackInfo<v8::Value> const&) + 3030
STDERR: 22  libblink_web.dylib                  0x00000001099250a2 blink::CanvasRenderingContext2DV8Internal::getImageDataMethodCallback(v8::FunctionCallbackInfo<v8::Value> const&) + 50
STDERR: 23  libv8.dylib                         0x00000001157ff54a v8::internal::FunctionCallbackArguments::Call(void (*)(v8::FunctionCallbackInfo<v8::Value> const&)) + 186
STDERR: 24  libv8.dylib                         0x000000011583bd66 v8::internal::MaybeHandle<v8::internal::Object> v8::internal::HandleApiCallHelper<false>(v8::internal::Isolate*, v8::internal::(anonymous namespace)::BuiltinArguments<(v8::internal::BuiltinExtraArguments)1>&) + 1270
STDERR: 25  libv8.dylib                         0x000000011583fe3e v8::internal::Builtin_HandleApiCall(int, v8::internal::Object**, v8::internal::Isolate*) + 174
STDERR: 26  ???                                 0x00003de207607f9b 0x0 + 68040995667867
STDERR: 27  ???                                 0x00003de207732f75 0x0 + 68040996892533
STDERR: