A number of known failures are marked. To support test262's
new tests which simulate multiple script tags, this patch
calls out to the d8 realm API from the harness adaptation code.
Review-Url: https://codereview.chromium.org/2290023002
Cr-Commit-Position: refs/heads/master@{#39099}
New incoming test262 tests check what happens on detached ("neutered")
ArrayBuffers. This patch makes the test262 infrastructure define
detaching an ArrayBuffer in terms of %ArrayBufferNeuter, passing the
--allow-natives-syntax flag, when it is needed.
BUG=v8:4193
LOG=N
R=adamk,machenbach
Review URL: https://codereview.chromium.org/1897203003
Cr-Commit-Position: refs/heads/master@{#35676}