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

chrome/browser/sessions/session_service_test_helper.h

 // Copyright (c) 2012 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_SESSIONS_SESSION_SERVICE_TEST_HELPER_H_
 #define CHROME_BROWSER_SESSIONS_SESSION_SERVICE_TEST_HELPER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
-#include "components/sessions/session_id.h"
+#include "components/sessions/core/session_id.h"
 
 class SessionService;
 
 namespace base {
 class RunLoop;
 }
 
 namespace sessions {
 class SerializedNavigationEntry;
 class SessionCommand;
@@ skipping 56 matching lines @@
   void RunTaskOnBackendThread(const tracked_objects::Location& from_here,
                               const base::Closure& task);
 
  private:
   scoped_ptr<SessionService> service_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionServiceTestHelper);
 };
 
 #endif  // CHROME_BROWSER_SESSIONS_SESSION_SERVICE_TEST_HELPER_H_