Add std::string constructors for Origin/SchemeHostPort to reduce copies

url/origin_unittest.cc

Index: url/origin_unittest.cc
diff --git a/url/origin_unittest.cc b/url/origin_unittest.cc
index 0f17c26ef50c40660995d818967f9db402322ef6..a5c30426f346214213f94c2b46c7da5924e48b89 100644
--- a/url/origin_unittest.cc
+++ b/url/origin_unittest.cc
@@ -90,20 +90,11 @@ TEST(OriginTest, ConstructFromTuple) {
                     << test_case.port;
     }
     SCOPED_TRACE(scope_message);
-
-    url::Origin origin_without_suborigin =
-        url::Origin::CreateFromNormalizedTuple(test_case.scheme, test_case.host,
-                                               test_case.port);
-
     url::Origin origin_with_suborigin =
         url::Origin::CreateFromNormalizedTupleWithSuborigin(
             test_case.scheme, test_case.host, test_case.port,
             test_case.suborigin);
 
-    EXPECT_EQ(test_case.scheme, origin_without_suborigin.scheme());
-    EXPECT_EQ(test_case.host, origin_without_suborigin.host());
-    EXPECT_EQ(test_case.port, origin_without_suborigin.port());
-
     EXPECT_EQ(test_case.scheme, origin_with_suborigin.scheme());
     EXPECT_EQ(test_case.host, origin_with_suborigin.host());
     EXPECT_EQ(test_case.port, origin_with_suborigin.port());