Convert //ios from scoped_ptr to std::unique_ptr.

ios/web/net/crw_url_verifying_protocol_handler_unittest.mm

Index: ios/web/net/crw_url_verifying_protocol_handler_unittest.mm
diff --git a/ios/web/net/crw_url_verifying_protocol_handler_unittest.mm b/ios/web/net/crw_url_verifying_protocol_handler_unittest.mm
index 059c40555e8b14e9b093fc81dcbaf65f41336b29..de1534af6e5ff22c16080d625fd7bb79c5b45e17 100644
--- a/ios/web/net/crw_url_verifying_protocol_handler_unittest.mm
+++ b/ios/web/net/crw_url_verifying_protocol_handler_unittest.mm
@@ -4,7 +4,9 @@
 
 #include "ios/web/net/crw_url_verifying_protocol_handler.h"
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
+#include "base/memory/ptr_util.h"
 #include "ios/web/public/test/scoped_testing_web_client.h"
 #import "ios/web/public/test/test_web_client.h"
 #include "ios/web/public/web_client.h"
@@ -15,7 +17,7 @@ namespace {
 // TODO(shreyasv): See if this can use the WebTest test fixture.
 TEST(CRWURLVerifyingProtocolHandlerTest, NonLazyInitializer) {
   web::ScopedTestingWebClient web_client(
-      make_scoped_ptr(new web::TestWebClient));
+      base::WrapUnique(new web::TestWebClient));
   EXPECT_TRUE([CRWURLVerifyingProtocolHandler preInitialize]);
 }