Convert //extensions/browser/api from scoped_ptr to std::unique_ptr

extensions/browser/api/sockets_udp/sockets_udp_api.cc

Index: extensions/browser/api/sockets_udp/sockets_udp_api.cc
diff --git a/extensions/browser/api/sockets_udp/sockets_udp_api.cc b/extensions/browser/api/sockets_udp/sockets_udp_api.cc
index dfefb738ce80dc5ba8bbdfdfb94be3cd770aebf0..9e2e607a4bdcef3cf4ea9e7a724f5f38ba095634 100644
--- a/extensions/browser/api/sockets_udp/sockets_udp_api.cc
+++ b/extensions/browser/api/sockets_udp/sockets_udp_api.cc
@@ -22,9 +22,9 @@ const int kWildcardPort = 0;
 
 UDPSocketAsyncApiFunction::~UDPSocketAsyncApiFunction() {}
 
-scoped_ptr<SocketResourceManagerInterface>
+std::unique_ptr<SocketResourceManagerInterface>
 UDPSocketAsyncApiFunction::CreateSocketResourceManager() {
-  return scoped_ptr<SocketResourceManagerInterface>(
+  return std::unique_ptr<SocketResourceManagerInterface>(
       new SocketResourceManager<ResumableUDPSocket>());
 }
 
@@ -35,9 +35,9 @@ ResumableUDPSocket* UDPSocketAsyncApiFunction::GetUdpSocket(int socket_id) {
 UDPSocketExtensionWithDnsLookupFunction::
     ~UDPSocketExtensionWithDnsLookupFunction() {}
 
-scoped_ptr<SocketResourceManagerInterface>
+std::unique_ptr<SocketResourceManagerInterface>
 UDPSocketExtensionWithDnsLookupFunction::CreateSocketResourceManager() {
-  return scoped_ptr<SocketResourceManagerInterface>(
+  return std::unique_ptr<SocketResourceManagerInterface>(
       new SocketResourceManager<ResumableUDPSocket>());
 }