Roll src/third_party/re2/src/ 5fcdf4ad4..6c109e908 (2 commits)

https://chromium.googlesource.com/external/github.com/google/re2.git/+log/5fcdf4ad4909..6c109e908aa4

$ git log 5fcdf4ad4..6c109e908 --date=short --no-merges --format='%ad %ae %s'
2020-01-29 junyer Make the fuzzer use FuzzedDataProvider.
2020-01-12 junyer Tidy up a test.

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

R=mmoroz@chromium.org

Change-Id: I46f5757eeace0104ebdef23be713b9f95a7b1d75
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2031881Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#737183}

DEPS

@@ -1390,7 +1390,7 @@ deps = {
   },
 
   'src/third_party/re2/src':
-    Var('chromium_git') + '/external/github.com/google/re2.git' + '@' + '5fcdf4ad49097668f0f260dbe6b21fa133302f78',
+    Var('chromium_git') + '/external/github.com/google/re2.git' + '@' + '6c109e908aa4006c0cd147d2397023b7b8f2705d',
 
   'src/third_party/r8': {
       'packages': [