Initialize ICU before fuzzing the template URL parser.

testing/libfuzzer/fuzzers/template_url_parser_fuzzer.cc

Index: testing/libfuzzer/fuzzers/template_url_parser_fuzzer.cc
diff --git a/testing/libfuzzer/fuzzers/template_url_parser_fuzzer.cc b/testing/libfuzzer/fuzzers/template_url_parser_fuzzer.cc
index 4d1b762032e18148fbf504cbb574a7b5073b1827..f98ad61bde2719d45c766f42f7db83c83c2c0ff3 100644
--- a/testing/libfuzzer/fuzzers/template_url_parser_fuzzer.cc
+++ b/testing/libfuzzer/fuzzers/template_url_parser_fuzzer.cc
@@ -8,6 +8,8 @@
 #include <random>
 #include <string>
 
+#include "base/at_exit.h"
+#include "base/i18n/icu_util.h"
 #include "components/search_engines/search_terms_data.h"
 #include "components/search_engines/template_url.h"
 #include "components/search_engines/template_url_parser.h"
@@ -34,6 +36,8 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   if (size < sizeof(FuzzerFixedParams)) {
     return 0;
   }
+  base::AtExitManager at_exit_manager;  // used by ICU integration.
+  base::i18n::InitializeICU();

[jochen (gone - plz use gerrit), 2017/04/18 07:08:57]

for posterity, we can't initialize ICU once per fuzzer run, instead, we should
add a function extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) that
initializes ICU

   const FuzzerFixedParams* params =
       reinterpret_cast<const FuzzerFixedParams*>(data);
   size -= sizeof(FuzzerFixedParams);