bug 985252. Build sandbox code regardless of whether --enable-content-sandbox/MOZ_CONTENT_SANDBOX is provided. Enable sandboxing of GMP plugins. Enable `SandboxBroker` to set different security policies for different process types. r=bbondy, r=cpearce, r=bent
Bug 1037318 - Log a test_start and test_end message for skipped tests in marionette.;r=jgraham