Update re2

third_party/re2/util/pcre.h

Index: third_party/re2/util/pcre.h
diff --git a/third_party/re2/util/pcre.h b/third_party/re2/util/pcre.h
index 771ac91a7e51439fc9be3c6861b10b67d67c74d7..20b10c069fdae5a18f6be72638c6ae4dc441f88b 100644
--- a/third_party/re2/util/pcre.h
+++ b/third_party/re2/util/pcre.h
@@ -167,28 +167,9 @@ namespace re2 {
 const bool UsingPCRE = true;
 }  // namespace re2
 #else
+struct pcre;  // opaque
 namespace re2 {
 const bool UsingPCRE = false;
-struct pcre;
-struct pcre_extra { int flags, match_limit, match_limit_recursion; };
-#define pcre_free(x) {}
-#define PCRE_EXTRA_MATCH_LIMIT 0
-#define PCRE_EXTRA_MATCH_LIMIT_RECURSION 0
-#define PCRE_ANCHORED 0
-#define PCRE_NOTEMPTY 0
-#define PCRE_ERROR_NOMATCH 1
-#define PCRE_ERROR_MATCHLIMIT 2
-#define PCRE_ERROR_RECURSIONLIMIT 3
-#define PCRE_INFO_CAPTURECOUNT 0
-#ifndef WIN32
-#define pcre_compile(a,b,c,d,e) ({ (void)(a); (void)(b); *(c)=""; *(d)=0; (void)(e); ((pcre*)0); })
-#define pcre_exec(a, b, c, d, e, f, g, h) ({ (void)(a); (void)(b); (void)(c); (void)(d); (void)(e); (void)(f); (void)(g); (void)(h); 0; })
-#define pcre_fullinfo(a, b, c, d) ({ (void)(a); (void)(b); (void)(c); *(d) = 0; 0; })
-#else
-#define pcre_compile(a,b,c,d,e) NULL
-#define pcre_exec(a, b, c, d, e, f, g, h) NULL
-#define pcre_fullinfo(a, b, c, d) NULL
-#endif
 }  // namespace re2
 #endif
 
@@ -516,7 +497,7 @@ class PCRE {
   int               match_limit_;    // Limit on execution resources
   int               stack_limit_;    // Limit on stack resources (bytes)
   mutable int32_t  hit_limit_;  // Hit limit during execution (bool)?
-  DISALLOW_EVIL_CONSTRUCTORS(PCRE);
+  DISALLOW_COPY_AND_ASSIGN(PCRE);
 };
 
 // PCRE_Options allow you to set the PCRE::Options, plus any pcre