Use ChromeBrowserStateManager instead of BrowserListIOS.

ios/chrome/browser/tabs/tab_model_synced_window_delegate_getter.h

Index: ios/chrome/browser/tabs/tab_model_synced_window_delegate_getter.h
diff --git a/ios/chrome/browser/tabs/tab_model_synced_window_delegate_getter.h b/ios/chrome/browser/tabs/tab_model_synced_window_delegate_getter.h
index 922dce17bf53547bf19025f6ed259bb1f7bad529..728d14485279e34ea95986067125cbc3cd28068d 100644
--- a/ios/chrome/browser/tabs/tab_model_synced_window_delegate_getter.h
+++ b/ios/chrome/browser/tabs/tab_model_synced_window_delegate_getter.h
@@ -15,28 +15,19 @@ namespace browser_sync {
 class SyncedWindowDelegate;
 }
 
-namespace ios {
-class ChromeBrowserState;
-}
-
 class TabModelSyncedWindowDelegatesGetter
     : public sync_sessions::SyncedWindowDelegatesGetter {
  public:
-  // TODO(crbug.com/548612): |browser_state| may be unnecessary as iOS does not
-  // supports multi-profile starting with M47. Should it be removed?
-  explicit TabModelSyncedWindowDelegatesGetter(
-      ios::ChromeBrowserState* browser_state);
+  TabModelSyncedWindowDelegatesGetter();
   ~TabModelSyncedWindowDelegatesGetter() override;
 
   // sync_sessions::SyncedWindowDelegatesGetter:
   std::set<const sync_sessions::SyncedWindowDelegate*>
   GetSyncedWindowDelegates() override;
   const sync_sessions::SyncedWindowDelegate* FindById(
-      SessionID::id_type id) override;
+      SessionID::id_type session_id) override;
 
  private:
-  const ios::ChromeBrowserState* const browser_state_;
-
   DISALLOW_COPY_AND_ASSIGN(TabModelSyncedWindowDelegatesGetter);
 };