Be explicit about namespace testing to not mix it with blink::testing

third_party/WebKit/Source/platform/weborigin/SecurityOriginTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 498 matching lines @@
       {"example.test", "example.test", true},
       {"EXAMPLE.TEST", "example.test", true},
       {"eXaMpLe.TeSt/path", "example.test%2Fpath", false},
       {",", "%2C", true},
       {"💩", "xn--ls8h", true},
       {"[]", "[]", false},
       {"%yo", "%25yo", false},
   };
 
   for (const TestCase& test : cases) {
-    SCOPED_TRACE(testing::Message() << "raw host: '" << test.host << "'");
+    SCOPED_TRACE(::testing::Message() << "raw host: '" << test.host << "'");
     String host = String::FromUTF8(test.host);
     bool success = false;
     String canonical_host = SecurityOrigin::CanonicalizeHost(host, &success);
     EXPECT_EQ(test.canonical_output, canonical_host);
     EXPECT_EQ(test.expected_success, success);
   }
 }
 
 }  // namespace blink