[iOS] Moving from HasFinishedInitialSetup to IsFirstSetupComplete

HasFinishedInitialSetup() is expected to be removed and replaced by
IsFirstSetupComplete().
Replacing HasFinishedInitialSetup() in:
  + first_run_egtest.mm
  + settings_table_view_controller.mm

Bug: 951313
Change-Id: Id509a68e0bbb72702c7df8e3581f64c7996ccb51
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1833610Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Commit-Queue: Jérôme Lebel <jlebel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#707890}

ios/chrome/browser/ui/first_run/first_run_egtest.mm

@@ -196,7 +196,7 @@ id<GREYMatcher> SkipSigninButton() {
   // Check Sync hasn't started yet, allowing the user to change some settings.
   SyncSetupService* sync_service = SyncSetupServiceFactory::GetForBrowserState(
       chrome_test_util::GetOriginalBrowserState());
-  GREYAssertFalse(sync_service->HasFinishedInitialSetup(),
+  GREYAssertFalse(sync_service->IsFirstSetupComplete(),
                   @"Sync shouldn't have finished its original setup yet");
 
   // Close Settings, user is still signed in and sync is now starting.
@@ -205,7 +205,7 @@ id<GREYMatcher> SkipSigninButton() {
 
   [SigninEarlGreyUtils checkSignedInWithIdentity:identity];
 
-  GREYAssertTrue(sync_service->HasFinishedInitialSetup(),
+  GREYAssertTrue(sync_service->IsFirstSetupComplete(),
                  @"Sync should have finished its original setup");
 }
 

ios/chrome/browser/ui/settings/settings_table_view_controller.mm

@@ -1007,7 +1007,7 @@ NSString* kDevViewSourceKey = @"DevViewSource";
         IDS_IOS_GOOGLE_SERVICES_SETTINGS_SYNC_DISABLBED_BY_ADMINISTRATOR_STATUS);
     googleServicesItem.image =
         [UIImage imageNamed:kSyncAndGoogleServicesSyncOffImageName];
-  } else if (!syncSetupService->HasFinishedInitialSetup()) {
+  } else if (!syncSetupService->IsFirstSetupComplete()) {
     googleServicesItem.detailText =
         l10n_util::GetNSString(IDS_IOS_SYNC_SETUP_IN_PROGRESS);
     googleServicesItem.image =