Roll src/third_party/nasm/ a0a6951e2..4ee6a69ce (2 commits)

https://chromium.googlesource.com/chromium/deps/nasm.git/+log/a0a6951e259b..4ee6a69ce33b

$ git log a0a6951e2..4ee6a69ce --date=short --no-merges --format='%ad %ae %s'
2018-11-19 dalecurtis Remove uses of time(NULL) for build determism.
2018-11-19 dalecurtis Add README.patches, clone find_patches.py from ffmpeg repository.

Created with:
  roll-dep src/third_party/nasm

R=davidben

Bug: 766721
Change-Id: Ie98e0aae2b4c955913da9bc88e19820232aa0a88
TBR: davidben
Reviewed-on: https://chromium-review.googlesource.com/c/1352586Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: David Benjamin <davidben@chromium.org>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611492}

DEPS

@@ -957,7 +957,7 @@ deps = {
 
   'src/third_party/nasm': {
       'url': Var('chromium_git') + '/chromium/deps/nasm.git' + '@' +
-      'a0a6951e259bd347c133969740348bb5ebb468c4'
+      '4ee6a69ce33be1e96fd3c44a6e3ae3d8177453da'
   },
 
   'src/third_party/netty-tcnative/src': {