Reland v5 of Sessions Refactor

chrome/browser/ui/sync/browser_synced_window_delegates_getter.h

Index: chrome/browser/ui/sync/browser_synced_window_delegates_getter.h
diff --git a/chrome/browser/ui/sync/browser_synced_window_delegates_getter.h b/chrome/browser/ui/sync/browser_synced_window_delegates_getter.h
index 806d5e65515cb4cd3f7798ad5ac167324cd967a4..a8fcbdfa6460597de043db1c688aab22a8661ee6 100644
--- a/chrome/browser/ui/sync/browser_synced_window_delegates_getter.h
+++ b/chrome/browser/ui/sync/browser_synced_window_delegates_getter.h
@@ -23,8 +23,7 @@ class BrowserSyncedWindowDelegatesGetter
   ~BrowserSyncedWindowDelegatesGetter() override;
 
   // SyncedWindowDelegatesGetter implementation
-  std::set<const sync_sessions::SyncedWindowDelegate*>
-  GetSyncedWindowDelegates() override;
+  SyncedWindowDelegateMap GetSyncedWindowDelegates() override;
   const sync_sessions::SyncedWindowDelegate* FindById(
       SessionID::id_type id) override;