(Base)SessionService: Remove dead code which was only used by the unit tests.

chrome/browser/sessions/session_service.h

 // Copyright (c) 2011 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_H_
 #define CHROME_BROWSER_SESSIONS_SESSION_SERVICE_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 152 matching lines @@
   // Fetches the contents of the last session, notifying the callback when
   // done. If the callback is supplied an empty vector of SessionWindows
   // it means the session could not be restored.
   //
   // The created request does NOT directly invoke the callback, rather the
   // callback invokes OnGotSessionCommands from which we map the
   // SessionCommands to browser state, then notify the callback.
   Handle GetLastSession(CancelableRequestConsumerBase* consumer,
                         const SessionCallback& callback);
 
-  // Fetches the contents of the current session, notifying the callback when
-  // done. If the callback is supplied an empty vector of SessionWindows
-  // it means the session could not be restored.
-  //
-  // The created request does NOT directly invoke the callback, rather the
-  // callback invokes OnGotSessionCommands from which we map the
-  // SessionCommands to browser state, then notify the callback.
-  Handle GetCurrentSession(CancelableRequestConsumerBase* consumer,
-                           const SessionCallback& callback);
-
   // Overridden from BaseSessionService because we want some UMA reporting on
   // session update activities.
   virtual void Save() OVERRIDE;
 
  private:
   typedef std::map<SessionID::id_type, std::pair<int, int> > IdToRange;
   typedef std::map<SessionID::id_type, SessionTab*> IdToSessionTab;
   typedef std::map<SessionID::id_type, SessionWindow*> IdToSessionWindow;
 
 
@@ skipping 259 matching lines @@
 
   // Constants used in calculating histogram data.
   const base::TimeDelta save_delay_in_millis_;
   const base::TimeDelta save_delay_in_mins_;
   const base::TimeDelta save_delay_in_hrs_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionService);
 };
 
 #endif  // CHROME_BROWSER_SESSIONS_SESSION_SERVICE_H_