Revert "Update includes for webrtc/{base => rtc_base} rename (3/3)"

webrtc/rtc_base/callback.h

 // This file was GENERATED by command:
 //     pump.py callback.h.pump
 // DO NOT EDIT BY HAND!!!
 
 /*
  *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
@@ skipping 44 matching lines @@
 //
 //   my_callback = Callback1<int, int>(add_k);
 //   cout << my_callback(10) << endl;  // 15
 //
 //   my_callback = Callback1<int, int>();
 //   cout << my_callback.empty() << endl;  // true
 
 #ifndef WEBRTC_RTC_BASE_CALLBACK_H_
 #define WEBRTC_RTC_BASE_CALLBACK_H_
 
-#include "webrtc/rtc_base/refcount.h"
-#include "webrtc/rtc_base/scoped_ref_ptr.h"
+#include "webrtc/base/refcount.h"
+#include "webrtc/base/scoped_ref_ptr.h"
 
 namespace rtc {
 
 template <class R>
 class Callback0 {
  public:
   // Default copy operations are appropriate for this class.
   Callback0() {}
   template <class T> Callback0(const T& functor)
       : helper_(new RefCountedObject< HelperImpl<T> >(functor)) {}
@@ skipping 174 matching lines @@
     virtual R Run(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) {
       return functor_(p1, p2, p3, p4, p5);
     }
     T functor_;
   };
   scoped_refptr<Helper> helper_;
 };
 }  // namespace rtc
 
 #endif  // WEBRTC_RTC_BASE_CALLBACK_H_