Use file_util::GetHomeDir instead of getenv("HOME").

base/nss_util.cc

 // Copyright (c) 2008-2010 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 "base/nss_util.h"
 #include "base/nss_util_internal.h"
 
 #include <nss.h>
 #include <plarena.h>
 #include <prerror.h>
@@ skipping 16 matching lines @@
 // or certificate verification, and we don't use the NSS certificate and key
 // databases.
 #if defined(OS_MACOSX) || defined(OS_WIN)
 #define USE_NSS_FOR_SSL_ONLY 1
 #endif
 
 namespace {
 
 #if !defined(USE_NSS_FOR_SSL_ONLY)
 std::string GetDefaultConfigDirectory() {
-  const char* home = getenv("HOME");
-  if (home == NULL) {
+  FilePath home = file_util::GetHomeDir();
+  if (home.empty()) {
     LOG(ERROR) << "$HOME is not set.";
-    return "";
+    return std::string();
   }
   FilePath dir(home);
   dir = dir.AppendASCII(".pki").AppendASCII("nssdb");
   if (!file_util::CreateDirectory(dir)) {
     LOG(ERROR) << "Failed to create ~/.pki/nssdb directory.";
-    return "";
+    return std::string();
   }
   return dir.value();
 }
 
 // On non-chromeos platforms, return the default config directory.
 // On chromeos, return a read-only directory with fake root CA certs for testing
 // (which will not exist on non-testing images).  These root CA certs are used
 // by the local Google Accounts server mock we use when testing our login code.
 // If this directory is not present, NSS_Init() will fail.  It is up to the
 // caller to failover to NSS_NoDB_Init() at that point.
@@ skipping 243 matching lines @@
   exploded.millisecond  = prxtime.tm_usec / 1000;
 
   return Time::FromUTCExploded(exploded);
 }
 
 PK11SlotInfo* GetDefaultNSSKeySlot() {
   return Singleton<NSSInitSingleton>::get()->GetDefaultKeySlot();
 }
 
 }  // namespace base