policy_fuzzer: Initialize ICU

Fix the spurious crash in the policy_fuzzer caused by missing ICU
initialization.

The ICU functionality is used by one of the fuzzer policy handlers.

Bug: 1092058
Change-Id: Ic93a61e9d4f9b7cc51d464582e7a42e262442152
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2232943Reviewed-by: Sergey Poromov <poromov@chromium.org>
Commit-Queue: Maksim Ivanov <emaxx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776030}

chrome/browser/chromeos/policy/fuzzer/policy_fuzzer.cc

@@ -7,6 +7,7 @@
 #include "base/check_op.h"
 #include "base/command_line.h"
 #include "base/files/scoped_temp_dir.h"
+#include "base/i18n/icu_util.h"
 #include "base/logging.h"
 #include "base/memory/weak_ptr.h"
 #include "base/path_service.h"
@@ -42,6 +43,7 @@ struct Environment {
     CHECK(scoped_temp_dir.CreateUniqueTempDir());
     CHECK(base::PathService::Override(chrome::DIR_USER_DATA,
                                       scoped_temp_dir.GetPath()));
+    CHECK(base::i18n::InitializeICU());
   }
 
   base::ScopedTempDir scoped_temp_dir;