Using XCTest allows us to drive tests from the commandline via
xcodebuild, and it also simplifies running tests on physical devices.
Tests put themselves into "XCTest-mode" if the
"XCTestConfigurationFilePath" environment variable is present. This
variable is only set when XCTests are running.
Change-Id: If55199a7470f0479f107097eef1dfb1a705015e9
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2033427
Commit-Queue: Rohit Rao <rohitrao@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
