ActiveScriptWrappable: GC wrappers in detached ExecutionContexts.

third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in

Index: third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in
diff --git a/third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in b/third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in
index cc1409926e877429713f25e4825c33c8ce4a8ef8..53913f41882e01f97f5a4cd86db123b550b5db20 100644
--- a/third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in
+++ b/third_party/WebKit/Source/platform/RuntimeEnabledFeatures.in
@@ -246,7 +246,7 @@ TimerThrottlingForHiddenFrames status=stable
 // touchscreen) in ApplyWebPreferences. "Touch events" themselves are always
 // enabled since they're a feature always supported by Chrome.
 TouchEventFeatureDetection status=stable
-TraceWrappables
+TraceWrappables status=experimental

[Michael Lippautz, 2016/12/15 13:57:31]

Not sure what the implications for this one are. We shouldn't run it on the
tests as we still ship with object grouping. Can we hold off on this one?

Having said that, I plan to make the switch to status=stable soon (after getting
https://codereview.chromium.org/2580813002/ in).

[sof, 2016/12/15 14:06:49]

Getting close, that's great :)

Yes, I'll definitely revert this change, but thought I needed to transition it
from being "status="-less to enable it for layout tests?

[Michael Lippautz, 2016/12/15 14:16:02]

Yeah, if you want it to test on the trybots. For committing we should turn it
off and watch the fyi bot at
https://build.chromium.org/p/chromium.fyi/builders/WebKit%20Linux%20-%20Trace...
(Ignore the inspector failures)

[sof, 2016/12/15 19:32:26]

ok, reverted in ps#4.

 TrueColorRendering status=experimental
 TrustedEventsDefaultAction status=stable
 UserSelectAll status=stable