Remove unused user email argument from nss_util.

BUG=413219
(for trivial refactoring)
TBR=willchan@chromium.org,rsleevi@chromium.org,nkostylev@chromium.org

Review URL: https://codereview.chromium.org/560303002

Cr-Commit-Position: refs/heads/master@{#294570}

chrome/browser/chromeos/login/auth/chrome_cryptohome_authenticator.cc

@@ -45,7 +45,6 @@ void ChromeCryptohomeAuthenticator::CheckSafeModeOwnership(
   }
 
   OwnerSettingsService::IsOwnerForSafeModeAsync(
-      context.GetUserID(),
       context.GetUserIDHash(),
       OwnerSettingsServiceFactory::GetInstance()->GetOwnerKeyUtil(),
       callback);

chrome/browser/chromeos/ownership/owner_settings_service.cc

@@ -377,7 +377,6 @@ void OwnerSettingsService::OwnerKeySet(bool success) {
 
 // static
 void OwnerSettingsService::IsOwnerForSafeModeAsync(
-    const std::string& user_id,
     const std::string& user_hash,
     const scoped_refptr<OwnerKeyUtil>& owner_key_util,
     const IsOwnerCallback& callback) {
@@ -389,7 +388,6 @@ void OwnerSettingsService::IsOwnerForSafeModeAsync(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(base::IgnoreResult(&crypto::InitializeNSSForChromeOSUser),
-                 user_id,
                  user_hash,
                  ProfileHelper::GetProfilePathByUserIdHash(user_hash)),
       base::Bind(&DoesPrivateKeyExistAsync, owner_key_util, callback));

chrome/browser/chromeos/ownership/owner_settings_service.h

@@ -69,7 +69,6 @@ class OwnerSettingsService : public DeviceSettingsService::PrivateKeyDelegate,
   // Checks if the user is the device owner, without the user profile having to
   // been initialized. Should be used only if login state is in safe mode.
   static void IsOwnerForSafeModeAsync(
-      const std::string& user_id,
       const std::string& user_hash,
       const scoped_refptr<ownership::OwnerKeyUtil>& owner_key_util,
       const IsOwnerCallback& callback);

chrome/browser/profiles/profile_io_data.cc

@@ -304,7 +304,7 @@ void StartNSSInitOnIOThread(const std::string& username,
            << "  hash:" << username_hash;
 
   // Make sure NSS is initialized for the user.
-  crypto::InitializeNSSForChromeOSUser(username, username_hash, path);
+  crypto::InitializeNSSForChromeOSUser(username_hash, path);
 
   // Check if it's OK to initialize TPM for the user before continuing. This
   // may not be the case if the TPM slot initialization was previously

crypto/nss_util.cc

@@ -450,10 +450,8 @@ class NSSInitSingleton {
     return crypto::ScopedPK11Slot(slot);
   }
 
-  bool InitializeNSSForChromeOSUser(
-      const std::string& email,
-      const std::string& username_hash,
-      const base::FilePath& path) {
+  bool InitializeNSSForChromeOSUser(const std::string& username_hash,
+                                    const base::FilePath& path) {
     DCHECK(thread_checker_.CalledOnValidThread());
     if (chromeos_user_map_.find(username_hash) != chromeos_user_map_.end()) {
       // This user already exists in our mapping.
@@ -1045,12 +1043,10 @@ void InitializeTPMTokenAndSystemSlot(
                                                         callback);
 }
 
-bool InitializeNSSForChromeOSUser(
-    const std::string& email,
-    const std::string& username_hash,
-    const base::FilePath& path) {
-  return g_nss_singleton.Get().InitializeNSSForChromeOSUser(
-      email, username_hash, path);
+bool InitializeNSSForChromeOSUser(const std::string& username_hash,
+                                  const base::FilePath& path) {
+  return g_nss_singleton.Get().InitializeNSSForChromeOSUser(username_hash,
+                                                            path);
 }
 
 bool ShouldInitializeTPMForChromeOSUser(const std::string& username_hash) {

crypto/nss_util_internal.h

@@ -64,7 +64,6 @@ CRYPTO_EXPORT_PRIVATE void SetSystemKeySlotForTesting(ScopedPK11Slot slot);
 // Prepare per-user NSS slot mapping. It is safe to call this function multiple
 // times. Returns true if the user was added, or false if it already existed.
 CRYPTO_EXPORT bool InitializeNSSForChromeOSUser(
-    const std::string& email,
     const std::string& username_hash,
     const base::FilePath& path);
 

crypto/scoped_test_nss_chromeos_user.cc

@@ -17,8 +17,8 @@ ScopedTestNSSChromeOSUser::ScopedTestNSSChromeOSUser(
     return;
   // This opens a software DB in the given folder. In production code that is in
   // the home folder, but for testing the temp folder is used.
-  constructed_successfully_ = InitializeNSSForChromeOSUser(
-      username_hash, username_hash, temp_dir_.path());
+  constructed_successfully_ =
+      InitializeNSSForChromeOSUser(username_hash, temp_dir_.path());
 }
 
 ScopedTestNSSChromeOSUser::~ScopedTestNSSChromeOSUser() {