commit 1bb6e15c873eafb5afe9d8438fb143b972c17a81
author Joshua Peraza <jperaza@chromium.org> Wed Apr 25 20:21:12 2018
committer Commit Bot <commit-bot@chromium.org> Wed Apr 25 20:21:12 2018
tree e6b6f1a83426913bf1e324e0e85b0bf82804571a
parent 14c5d49cfb5674793fe0d5223cc4cf257732a8ff

Add an observer interface to CrashHandlerHost

This interface allows interested classes, including
AwBrowserTerminator, ChromeStabilityMetricsProvider,
OutOfMemoryReporter, and DataReductionProxyPingbackClientImpl to
distinguish between child process crashes and kills on Android.
Previously, this was done by either passing a file descriptor to the
child process (AwBrowserTerminator) or by observing whether a crash
dump was successfully produced. This eliminates the need for the extra
descriptor for AwBrowserTerminator, as well as providing a more
accurate signal for classes that relied on checking for a crash dump.

Observers can use this interface in combination with observing child
process exits/disconnects. If an observer sees a child process
disconnect without having observed a crash signal for the child, it
can deduce that the child was killed.

Bug: crashpad:30
Change-Id: I6213d31f30d15b30d2a3987fe95229042371938b
Reviewed-on: https://chromium-review.googlesource.com/1026085
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553715}