Replace scoped_ptr with unique_ptr in webrtc/base/

webrtc/base/macifaddrs_converter.cc

Index: webrtc/base/macifaddrs_converter.cc
diff --git a/webrtc/base/macifaddrs_converter.cc b/webrtc/base/macifaddrs_converter.cc
index 0916cb5ba27f182e5bef22e9d41564b64fcf9b5e..2ad070e8eab6c1e4588efd72354988c97fb19e54 100644
--- a/webrtc/base/macifaddrs_converter.cc
+++ b/webrtc/base/macifaddrs_converter.cc
@@ -8,6 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#include <memory>
+
 #include <net/if.h>
 #include <sys/ioctl.h>
 #include <unistd.h>
@@ -15,7 +17,6 @@
 #include "webrtc/base/checks.h"
 #include "webrtc/base/ifaddrs_converter.h"
 #include "webrtc/base/logging.h"
-#include "webrtc/base/scoped_ptr.h"
 
 #if !defined(WEBRTC_IOS)
 #include <net/if_media.h>
@@ -269,7 +270,7 @@ class MacIfAddrsConverter : public IfAddrsConverter {
   }
 
  private:
-  rtc::scoped_ptr<IPv6AttributesGetter> ip_attribute_getter_;
+  std::unique_ptr<IPv6AttributesGetter> ip_attribute_getter_;
 };
 
 }  // namespace