Migrate extensions/* to net::IPAddress.

extensions/browser/api/cast_channel/cast_test_util.cc

Index: extensions/browser/api/cast_channel/cast_test_util.cc
diff --git a/extensions/browser/api/cast_channel/cast_test_util.cc b/extensions/browser/api/cast_channel/cast_test_util.cc
index eb5908b0266a2a5bc4cc513e2afed1befcb68001..13a19641f2e0884bfa5c4f056c139554f02001bf 100644
--- a/extensions/browser/api/cast_channel/cast_test_util.cc
+++ b/extensions/browser/api/cast_channel/cast_test_util.cc
@@ -6,6 +6,8 @@
 
 #include <utility>
 
+#include "net/base/ip_address.h"
+
 namespace extensions {
 namespace api {
 namespace cast_channel {
@@ -39,12 +41,7 @@ MockCastSocket::~MockCastSocket() {
 }
 
 net::IPEndPoint CreateIPEndPointForTest() {
-  net::IPAddressNumber number;
-  number.push_back(192);
-  number.push_back(168);
-  number.push_back(1);
-  number.push_back(1);
-  return net::IPEndPoint(number, 8009);
+  return net::IPEndPoint(net::IPAddress(192, 168, 1, 1), 8009);
 }
 
 }  // namespace cast_channel