Only initialize ICU once in the template URL parser fuzzer.

testing/libfuzzer/fuzzers/template_url_parser_fuzzer.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <random>
 #include <string>
 
@@ skipping 14 matching lines @@
 
  private:
   std::mt19937 generator_;
   std::uniform_int_distribution<uint8_t> pool_;
 };
 
 struct FuzzerFixedParams {
   uint32_t seed_;
 };
 
+base::AtExitManager at_exit_manager;  // used by ICU integration
+
+extern "C" int LLVMFuzzerInitialize(int argc, char*** argv) {
+  CHECK(base::i18n::InitializeICU());
+  return 0;
+}
+
 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();
   const FuzzerFixedParams* params =
       reinterpret_cast<const FuzzerFixedParams*>(data);
   size -= sizeof(FuzzerFixedParams);
   const char* char_data = reinterpret_cast<const char*>(params + 1);
   PseudoRandomFilter filter(params->seed_);
   TemplateURLParser::Parse(SearchTermsData(), char_data, size, &filter);
   return 0;
 }