Initialize ICU in query_parser_fuzzer

Bug: 1013545
Change-Id: I3780efe1bdddcf02bf0c9cfa880a36b4cf67b067
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1856802Reviewed-by: Abhishek Arya <inferno@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Dan McArdle <dmcardle@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705597}

components/query_parser/BUILD.gn

@@ -39,5 +39,6 @@ fuzzer_test("query_parser_fuzzer") {
   deps = [
     ":query_parser",
     "//base:base",
+    "//base:i18n",
   ]
 }

components/query_parser/query_parser_fuzzer.cc

@@ -6,16 +6,22 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include "base/i18n/icu_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/query_parser/query_parser.h"
 
+struct Environment {
+  Environment() { CHECK(base::i18n::InitializeICU()); }
+};
+
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  static Environment env;
   FuzzedDataProvider data_provider(data, size);
 
   const query_parser::MatchingAlgorithm matching_alg =
       data_provider.ConsumeEnum<query_parser::MatchingAlgorithm>();
-  const base::string16 query16(base::UTF8ToUTF16(
-      data_provider.ConsumeBytesAsString(data_provider.remaining_bytes())));
+  const base::string16 query16 = base::UTF8ToUTF16(
+      data_provider.ConsumeBytesAsString(data_provider.remaining_bytes()));
 
   query_parser::QueryParser parser;
   std::vector<base::string16> words;