SimulatedCrash sampling and branching on has_notified_completion_ To prepare for Dev channel, we'll sample the simulated crash reporting accordingly (~.001% of ERR_ABORTS < 100ms)
SimulatedCrash sampling and branching on has_notified_completion_
To prepare for Dev channel, we'll sample the simulated crash reporting accordingly (~.001% of ERR_ABORTS < 100ms)

In addition, this fixes a bug where all URLRequests that last < 100ms are reported, whether they are aborts or not.

BUG=557430

Review URL: https://codereview.chromium.org/1483213002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#362303}

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