[Sync] Remove static methods on SyncedWindowDelegate.

chrome/browser/sync/sessions/synced_window_delegates_getter.cc

Index: chrome/browser/sync/sessions/synced_window_delegates_getter.cc
diff --git a/chrome/browser/sync/sessions/synced_window_delegates_getter.cc b/chrome/browser/sync/sessions/synced_window_delegates_getter.cc
index 541b017734c164e1174d1b35a3bea11824ee430e..3763df47316defc4eec681b9d82643778f764d54 100644
--- a/chrome/browser/sync/sessions/synced_window_delegates_getter.cc
+++ b/chrome/browser/sync/sessions/synced_window_delegates_getter.cc
@@ -4,17 +4,10 @@
 
 #include "chrome/browser/sync/sessions/synced_window_delegates_getter.h"
 
-#include "chrome/browser/sync/glue/synced_window_delegate.h"
-
 namespace browser_sync {
 
 SyncedWindowDelegatesGetter::SyncedWindowDelegatesGetter() {}
 
 SyncedWindowDelegatesGetter::~SyncedWindowDelegatesGetter() {}
 
-std::set<const SyncedWindowDelegate*>
-SyncedWindowDelegatesGetter::GetSyncedWindowDelegates() {
-  return SyncedWindowDelegate::GetAll();
-}
-
 }  // namespace browser_sync