Roll re2 dba3349..596d73e.

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 281 matching lines @@
     Var('chromium_git') + '/external/github.com/chromium/dom-distiller-dist.git' + '@' + '7051bdd89620d2d4805531ed957f3de83d9d73b2',
 
   'src/third_party/catapult':
     Var('chromium_git') + '/external/github.com/catapult-project/catapult.git' + '@' +
     Var('catapult_revision'),
 
   'src/third_party/openh264/src':
     Var('chromium_git') + '/external/github.com/cisco/openh264' + '@' + '0fd88df93c5dcaf858c57eb7892bd27763f0f0ac',
 
   'src/third_party/re2/src':
-    Var('chromium_git') + '/external/github.com/google/re2.git' + '@' + 'dba3349aba83b5588e85e5ecf2b56c97f2d259b7',
+    Var('chromium_git') + '/external/github.com/google/re2.git' + '@' + '596d73e6084a88c5394724978b10680dc929d197',
 
   # Used for building libFuzzers (only supports Linux).
   'src/third_party/libFuzzer/src':
     Var('chromium_git') + '/chromium/llvm-project/llvm/lib/Fuzzer.git' + '@' +  Var('libfuzzer_revision'),
 
   'src/third_party/visualmetrics/src':
     Var('chromium_git') + '/external/github.com/WPO-Foundation/visualmetrics.git' + '@' +  '1edde9d2fe203229c895b648fdec355917200ad6',
 
   'src/third_party/scan-build/src':
     Var('chromium_git') + '/chromium/llvm-project/cfe/tools/scan-build.git' + '@' +  Var('scanbuild_revision'),
@@ skipping 810 matching lines @@
 ]
 
 recursedeps = [
   # buildtools provides clang_format, libc++, and libc++abi
   'src/buildtools',
   # android_tools manages the NDK.
   'src/third_party/android_tools',
   # ANGLE manages DEPS that it also owns the build files for, such as dEQP.
   ("src/third_party/angle", "DEPS.chromium"),
 ]