Angular's Parser test regressed

[blois]

Angular's Parser test appears to have regressed in:
http://chromegw.corp.google.com/i/client.dart/builders/dart2js-drt-linux-1-2-be/builds/1715

Repro command is:
python tools/test.py -mrelease -cdart2js -rdrt --use-sdk --write-debug-log --write-test-outcome-log --checked -t120 pkg/third_party/angular_tests/browser_test/core/parser/parser

CL which introduced the regression appears to be:
https://codereview.chromium.org//140643006

Reverting this CL appears to fix the issue.

[kasperl]

Pretty sure I know exactly how to fix this on the Angular side. Stay tuned!

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cc @lrhn.
Set owner to @kasperl.

[lrhn]

Still, if you regress on performance, it means that the Symbol.validated constructor (the only thing that changed) is now slower.
It's not surprising, since we did increase the complexity of the validation in order to detect more/all invalid inputs, but I would not expect it to be very significant.
Especially with dart2js code, the RegExp should be fast enough.

How much did you regress?

[kasperl]

It's not a performance regression.

[kasperl]

Solved on the Angular side with this PR: dart-archive/angular.dart#614.

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Added Started label.

[kasperl]

This really isn't a dart2js issue, so I'm marking this 'as designed'.

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Removed Priority-Critical label.
Added Priority-Medium, AsDesigned labels.