Convert AccountInfo::GetAccountId to a free function

Converting the method to a free function allows to decouple
AccountInfo from AccountId, eventually allowing to move it
to services/identity/public/cpp or even converting to the
mojo structure.

Bug: none
Change-Id: I020dad29ae286cd9da23c819ce0f32c57da3fb8c
Reviewed-on: https://chromium-review.googlesource.com/1124453Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Reviewed-by: Julian Pastarmov <pastarmovj@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574184}

chrome/browser/android/signin/signin_manager_android.cc

@@ -178,9 +178,9 @@ void SigninManagerAndroid::FetchPolicyBeforeSignIn(
         content::BrowserContext::GetDefaultStoragePartition(profile_)
             ->GetURLLoaderFactoryForBrowserProcess();
     service->FetchPolicyForSignedInUser(
-        AccountTrackerServiceFactory::GetForProfile(profile_)
-            ->FindAccountInfoByEmail(username_)
-            .GetAccountId(),
+        AccountIdFromAccountInfo(
+            AccountTrackerServiceFactory::GetForProfile(profile_)
+                ->FindAccountInfoByEmail(username_)),
         dm_token_, client_id_, profile_->GetRequestContext(),
         url_loader_factory,
         base::Bind(&SigninManagerAndroid::OnPolicyFetchDone,

chrome/browser/policy/cloud/user_policy_signin_service.cc

@@ -176,7 +176,7 @@ void UserPolicySigninService::TryInitializeForSignedInUser() {
   }
 
   InitializeForSignedInUser(
-      signin_manager()->GetAuthenticatedAccountInfo().GetAccountId(),
+      AccountIdFromAccountInfo(signin_manager()->GetAuthenticatedAccountInfo()),
       profile_->GetRequestContext(),
       content::BrowserContext::GetDefaultStoragePartition(profile_)
           ->GetURLLoaderFactoryForBrowserProcess());

chrome/browser/policy/cloud/user_policy_signin_service_base.cc

@@ -197,7 +197,7 @@ void UserPolicySigninServiceBase::InitializeOnProfileReady(Profile* profile) {
   signin_manager()->AddObserver(this);
 
   AccountId account_id =
-      signin_manager()->GetAuthenticatedAccountInfo().GetAccountId();
+      AccountIdFromAccountInfo(signin_manager()->GetAuthenticatedAccountInfo());
   if (!account_id.is_valid())
     ShutdownUserCloudPolicyManager();
   else

chrome/browser/ui/webui/signin/dice_turn_sync_on_helper.cc

@@ -251,7 +251,7 @@ void DiceTurnSyncOnHelper::LoadPolicyWithCachedCredentials() {
   policy::UserPolicySigninService* policy_service =
       policy::UserPolicySigninServiceFactory::GetForProfile(profile_);
   policy_service->FetchPolicyForSignedInUser(
-      account_info_.GetAccountId(), dm_token_, client_id_,
+      AccountIdFromAccountInfo(account_info_), dm_token_, client_id_,
       profile_->GetRequestContext(),
       content::BrowserContext::GetDefaultStoragePartition(profile_)
           ->GetURLLoaderFactoryForBrowserProcess(),

components/signin/core/browser/account_info.cc

@@ -55,9 +55,10 @@ bool AccountInfo::UpdateWith(const AccountInfo& other) {
   return modified;
 }
 
-AccountId AccountInfo::GetAccountId() const {
-  if (IsEmpty())
+AccountId AccountIdFromAccountInfo(const AccountInfo& account_info) {
+  if (account_info.IsEmpty())
     return EmptyAccountId();
-  DCHECK(!email.empty() && !gaia.empty());
-  return AccountId::FromUserEmailGaiaId(email, gaia);
-}
\ No newline at end of file
+
+  DCHECK(!account_info.email.empty() && !account_info.gaia.empty());
+  return AccountId::FromUserEmailGaiaId(account_info.email, account_info.gaia);
+}

components/signin/core/browser/account_info.h

@@ -34,9 +34,9 @@ struct AccountInfo {
   // Updates the empty fields of |this| with |other|. Returns whether at least
   // one field was updated.
   bool UpdateWith(const AccountInfo& other);
-
-  // Returns AccountId populated from the account info.
-  AccountId GetAccountId() const;
 };
 
+// Returns AccountID populated from |account_info|.
+AccountId AccountIdFromAccountInfo(const AccountInfo& account_info);
+
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_ACCOUNT_INFO_H_