Mark URLs with empty schemes as invalid.

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 <stddef.h>
 
 #include "base/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 #include "url/url_canon.h"
@@ skipping 214 matching lines @@
     "http://google.com",
     "unknown://google.com",
     "http://user:pass@google.com",
     "http://google.com:12345",
     "http://google.com/path",
     "http://google.com//path",
     "http://google.com?k=v#fragment",
     "http://user:pass@google.com:12345/path?k=v#fragment",
     "http:/path",
     "http:path",
-    "://google.com",
   };
   for (size_t i = 0; i < arraysize(valid_cases); i++) {
     EXPECT_TRUE(GURL(valid_cases[i]).is_valid())
         << "Case: " << valid_cases[i];
   }
 
   const char* invalid_cases[] = {
     "http://?k=v",
     "http:://google.com",
     "http//google.com",
     "http://google.com:12three45",
+    "://google.com",
     "path",
   };
   for (size_t i = 0; i < arraysize(invalid_cases); i++) {
     EXPECT_FALSE(GURL(invalid_cases[i]).is_valid())
         << "Case: " << invalid_cases[i];
   }
 }
 
 TEST(GURLTest, ExtraSlashesBeforeAuthority) {
   // According to RFC3986, the hierarchical part for URI with an authority
@@ skipping 445 matching lines @@
   };
 
   for (const auto& test : cases) {
     GURL url(test.url);
     EXPECT_EQ(test.expected, url.path()) << test.url;
     EXPECT_EQ(test.expected, url.GetContent()) << test.url;
   }
 }
 
 }  // namespace url