Revert of Update re2

third_party/re2/re2/testing/exhaustive_tester.h

Index: third_party/re2/re2/testing/exhaustive_tester.h
diff --git a/third_party/re2/re2/testing/exhaustive_tester.h b/third_party/re2/re2/testing/exhaustive_tester.h
index 1facb9798acdac9e2a20e69c2e8013b0621a1750..38a139f58859ac72ac28224678cba17385f2b702 100644
--- a/third_party/re2/re2/testing/exhaustive_tester.h
+++ b/third_party/re2/re2/testing/exhaustive_tester.h
@@ -12,16 +12,6 @@
 #include "re2/testing/string_generator.h"
 
 namespace re2 {
-
-#if !defined(NDEBUG)
-// We are in a debug build.
-const bool RE2_DEBUG_MODE = true;
-#elif ADDRESS_SANITIZER || MEMORY_SANITIZER || THREAD_SANITIZER
-// Not a debug build, but still under sanitizers.
-const bool RE2_DEBUG_MODE = true;
-#else
-const bool RE2_DEBUG_MODE = false;
-#endif
 
 // Exhaustive regular expression test: generate all regexps within parameters,
 // then generate all strings of a given length over a given alphabet,
@@ -73,7 +63,7 @@
   bool randomstrings_;  // Whether to use random strings
   int32 stringseed_;    // If so, the seed.
   int stringcount_;     // If so, how many to generate.
-  DISALLOW_COPY_AND_ASSIGN(ExhaustiveTester);
+  DISALLOW_EVIL_CONSTRUCTORS(ExhaustiveTester);
 };
 
 // Runs an exhaustive test on the given parameters.