Update from https://crrev.com/306655

url/gurl_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 #include "url/url_canon.h"
 #include "url/url_test_utils.h"
 
@@ skipping 325 matching lines @@
   struct TestCase {
     const char* input;
     const char* expected;
   } cases[] = {
     {"http://www.google.com", "http://www.google.com/"},
     {"http://user:pass@www.google.com:21/blah#baz", "http://www.google.com:21/blah"},
     {"http://user@www.google.com", "http://www.google.com/"},
     {"http://:pass@www.google.com", "http://www.google.com/"},
     {"http://:@www.google.com", "http://www.google.com/"},
     {"http://www.google.com/temp/foo?q#b", "http://www.google.com/temp/foo?q"},
+    {"not a url", ""},
+    {"unknown-scheme://foo.html", ""},
+    {"file:///tmp/test.html", ""},
+    {"https://www.google.com", "https://www.google.com/"},
   };
   for (size_t i = 0; i < arraysize(cases); i++) {
     GURL url(cases[i].input);
     GURL origin = url.GetAsReferrer();
     EXPECT_EQ(cases[i].expected, origin.spec());
   }
 }
 
 TEST(GURLTest, GetWithEmptyPath) {
   struct TestCase {
@@ skipping 273 matching lines @@
   EXPECT_FALSE(GURL("http://bar/").SchemeIsWSOrWSS());
 }
 
 TEST(GURLTest, SchemeIsBlob) {
   EXPECT_TRUE(GURL("BLOB://BAR/").SchemeIsBlob());
   EXPECT_TRUE(GURL("blob://bar/").SchemeIsBlob());
   EXPECT_FALSE(GURL("http://bar/").SchemeIsBlob());
 }
 
 }  // namespace url