Remove some outdated code

- Accounts do not need to be reloaded on every foreground, as it already
  happens when the app starts. The original comment on access tokens was
  inaccurate as well.

- No need to invoke network initialized anymore since cc name fixer flows
  were removed.

Change-Id: Id801a6f04f5c8042bf95a4d4af1225e2fa7257bb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4363342
Reviewed-by: Hiroshi Ichikawa <ichikawa@chromium.org>
Commit-Queue: John Wu <jzw@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1121433}

ios/web_view/internal/sync/cwv_sync_controller.mm

@@ -31,9 +31,6 @@ - (void)didShutdownSync;
 // Called by WebViewSyncControllerObserverBridge's |OnStateChanged|.
 - (void)syncStateDidChange;
 
-// Call to reload accounts from the |dataSource|.
-- (void)reloadAccounts;
-
 @end
 
 namespace ios_web_view {
@@ -104,18 +101,6 @@ - (instancetype)initWithSyncService:(syncer::SyncService*)syncService
         std::make_unique<ios_web_view::WebViewSyncControllerObserverBridge>(
             self);
     _syncService->AddObserver(_observer.get());
-
-    // Refresh access tokens on foreground to extend expiration dates.
-    [[NSNotificationCenter defaultCenter]
-        addObserver:self
-           selector:@selector(reloadAccounts)
-               name:UIApplicationWillEnterForegroundNotification
-             object:nil];
-
-    // This allows internals of |_identityManager| to fetch and store the user's
-    // info and profile image. This must be called manually *after* all services
-    // have been started to avoid issues in https://crbug.com/441399.
-    _identityManager->OnNetworkInitialized();
   }
   return self;
 }
@@ -218,11 +203,4 @@ - (void)syncStateDidChange {
   }
 }
 
-- (void)reloadAccounts {
-  _identityManager->GetDeviceAccountsSynchronizer()
-      ->ReloadAllAccountsFromSystemWithPrimaryAccount(
-          _identityManager->GetPrimaryAccountInfo(signin::ConsentLevel::kSync)
-              .account_id);
-}
-
 @end