Move all core files in //components/sessions into core/ subdir

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 "components/sessions/session_id.h"
+#include "components/sessions/core/session_id.h"
 #include "components/sync_driver/sessions/synced_window_delegates_getter.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_