[Sync] Remove static methods on SyncedWindowDelegate.

chrome/browser/ui/sync/browser_synced_window_delegates_getter.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_UI_SYNC_BROWSER_SYNCED_WINDOW_DELEGATES_GETTER_H_
+#define CHROME_BROWSER_UI_SYNC_BROWSER_SYNCED_WINDOW_DELEGATES_GETTER_H_
+
+#include <set>
+
+#include "base/macros.h"
+#include "chrome/browser/sync/sessions/synced_window_delegates_getter.h"
+#include "components/sessions/session_id.h"
+
+namespace browser_sync {
+
+class SyncedWindowDelegate;
+
+// This class defines how to access SyncedWindowDelegates on desktop.
+class BrowserSyncedWindowDelegatesGetter : public SyncedWindowDelegatesGetter {
+ public:
+  BrowserSyncedWindowDelegatesGetter();
+  ~BrowserSyncedWindowDelegatesGetter() override;
+
+  // SyncedWindowDelegatesGetter implementation
+  std::set<const SyncedWindowDelegate*> GetSyncedWindowDelegates() override;
+  const SyncedWindowDelegate* FindById(SessionID::id_type id) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BrowserSyncedWindowDelegatesGetter);
+};
+
+}  // namespace browser_sync
+
+#endif  // CHROME_BROWSER_UI_SYNC_BROWSER_SYNCED_WINDOW_DELEGATES_GETTER_H_