Rolling v8/third_party/WebKit/Source/platform/inspector_protocol to ac24d974a70c8611d2837e183d6cf99f39fb0410

TBR=machenbach@chromium.org,vogelheim@chromium.org,hablich@chromium.org

Review-Url: https://codereview.chromium.org/2244173002
Cr-Commit-Position: refs/heads/master@{#38631}