Roll src/third_party/re2/src/ 572d6abf7..ca93436e5 (6 commits)

https://chromium.googlesource.com/external/github.com/google/re2.git/+log/572d6abf7f22..ca93436e5b1b

$ git log 572d6abf7..ca93436e5 --date=short --no-merges --format='%ad %ae %s'
2020-03-15 junyer Update Unicode data to 13.0.0.
2020-03-12 junyer SRWLOCK requires Windows Vista or Windows Server 2008 at minimum.
2020-03-04 donatas.saulys Using slim RW lock on windows
2020-03-02 junyer Set SONAME to 6.
2020-03-01 junyer Bump SONAME to reflect the ABI break.
2020-02-28 junyer Add macOS and Xcode jobs to the Travis CI matrix.

Created with:
  roll-dep src/third_party/re2/src

R=mmoroz@chromium.org

Change-Id: I2f8c6ee0a33a594a595ab70840bba2b066385d19
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2104262Reviewed-by: Max Moroz <mmoroz@chromium.org>
Commit-Queue: Max Moroz <mmoroz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#750468}

DEPS

@@ -1339,7 +1339,7 @@ deps = {
   },
 
   'src/third_party/re2/src':
-    Var('chromium_git') + '/external/github.com/google/re2.git' + '@' + '572d6abf7f227053a4f8b83381fc4378714a2552',
+    Var('chromium_git') + '/external/github.com/google/re2.git' + '@' + 'ca93436e5b1be02f9f4bfca79b8202c400161994',
 
   'src/third_party/r8': {
       'packages': [