Run telemetry_perf_unittests via isolate on "Mac tests", "Linux tests" and trybot with swarming.
This includes the reland of https://codereview.chromium.org/1423733003/ which
was reverted because it failed isolate tests with the error message
"telemetry_perf_unittests lstat /b/build/slave/Mac_Builder/build/src/out/Release/crashpad_database_util: no such file or directory"
Fix to crashpad_database_util is in 2nd patch. (main change in chrome/chrome_tests.gypi file only, the other diff in chromium.*.json are due to adding swarming + rebase)
* I verify on my Mac that this build crashpad_database_util:
$ rm out/Release/crashpad_database_util
remove out/Release/crashpad_database_util? y
$ ninja -C out/Release/ telemetry_perf_unittests
ninja: Entering directory `out/Release/'
[3/3] STAMP obj/chrome/telemetry_perf_unittests.actions_depends.stamp
$ ls out/Release/crashpad_database_util
out/Release/crashpad_database_util
BUG=507796
CQ_EXTRA_TRYBOTS=tryserver.chromium.perf:linux_perf_bisect;tryserver.chromium.perf:mac_10_10_perf_bisect;tryserver.chromium.perf:android_nexus5_perf_bisect
Review URL: https://codereview.chromium.org/1412333004
Cr-Commit-Position: refs/heads/master@{#357765}
8 files changed
