Use base/scoped_ptr.h; system_wrappers/interface/scoped_ptr.h is going away

BUG=
R=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/36229004

Cr-Commit-Position: refs/heads/master@{#8517}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8517 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/system_wrappers/interface/clock.h b/webrtc/system_wrappers/interface/clock.h
index ed65006..4da3203 100644
--- a/webrtc/system_wrappers/interface/clock.h
+++ b/webrtc/system_wrappers/interface/clock.h
@@ -11,8 +11,8 @@
 #ifndef WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CLOCK_H_
 #define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CLOCK_H_
 
+#include "webrtc/base/scoped_ptr.h"
 #include "webrtc/system_wrappers/interface/rw_lock_wrapper.h"
-#include "webrtc/system_wrappers/interface/scoped_ptr.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
@@ -77,7 +77,7 @@
 
  private:
   int64_t time_us_;
-  scoped_ptr<RWLockWrapper> lock_;
+  rtc::scoped_ptr<RWLockWrapper> lock_;
 };
 
 };  // namespace webrtc