This CL changes the webtiming-resolution to test that resolution is
larger than 10 microseconds, instead of testing for a specific value.
This allows the test to no longer be flaky and to be moved to wpt.

The webtiming-ssl test is moved to WPT, using an https connection to
ensure that secureConnectionStart is correctly defined.

Bug: chromium:801341
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_mojo
Change-Id: I4d31faa08d00251098f3dc648c794d80bbcc2f22
Reviewed-on: https://chromium-review.googlesource.com/867310
Commit-Queue: Nicolás Peña Moreno <[email protected]>
Reviewed-by: Robert Ma <[email protected]>
Reviewed-by: Timothy Dresser <[email protected]>
Cr-Commit-Position: refs/heads/master@{#553666}