Move murmurhash to src/common/third_party Bug: chromium:697758 Change-Id: I8a3a990b14cde0fdd45319d593040bfc571abf3e Reviewed-on: https://chromium-review.googlesource.com/527602 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>