Remove ChromeBrowserProvider::CreateSyncedWindowDelegatesGetter().

ios/public/provider/chrome/browser/chrome_browser_provider.mm

Index: ios/public/provider/chrome/browser/chrome_browser_provider.mm
diff --git a/ios/public/provider/chrome/browser/chrome_browser_provider.mm b/ios/public/provider/chrome/browser/chrome_browser_provider.mm
index f900bebc4c94269663abe66ccd17e290a6d6b04d..d771c77eee1c9f3c09fb5eff1686694f2ab8f078 100644
--- a/ios/public/provider/chrome/browser/chrome_browser_provider.mm
+++ b/ios/public/provider/chrome/browser/chrome_browser_provider.mm
@@ -8,7 +8,6 @@
 
 #include "base/logging.h"
 #include "components/metrics/metrics_provider.h"
-#include "components/sync_sessions/synced_window_delegates_getter.h"
 
 namespace ios {
 
@@ -85,12 +84,6 @@ bool ChromeBrowserProvider::IsSafeBrowsingEnabled(
   return false;
 }
 
-std::unique_ptr<sync_sessions::SyncedWindowDelegatesGetter>
-ChromeBrowserProvider::CreateSyncedWindowDelegatesGetter(
-    ios::ChromeBrowserState* browser_state) {
-  return nullptr;
-}
-
 VoiceSearchProvider* ChromeBrowserProvider::GetVoiceSearchProvider() const {
   return nullptr;
 }