Rolling v8/tools/clang to c3b604840a63c06fa1c0c652119860e97fd57abe

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

Review URL: https://codereview.chromium.org/1601523006

Cr-Commit-Position: refs/heads/master@{#33378}