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

third_party/WebKit/Source/platform/loader/LinkHeaderTest.cpp

 // Copyright 2015 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 "platform/loader/LinkHeader.h"
 
 #include <base/macros.h>
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
@@ skipping 157 matching lines @@
   if (test_case.valid) {
     EXPECT_STREQ(test_case.url, header.Url().Ascii().data());
     EXPECT_STREQ(test_case.rel, header.Rel().Ascii().data());
     EXPECT_STREQ(test_case.as, header.As().Ascii().data());
     EXPECT_STREQ(test_case.media, header.Media().Ascii().data());
   }
 }
 
 INSTANTIATE_TEST_CASE_P(LinkHeaderTest,
                         SingleLinkHeaderTest,
-                        testing::ValuesIn(g_single_test_cases));
+                        ::testing::ValuesIn(g_single_test_cases));
 
 struct DoubleTestCase {
   const char* header_value;
   const char* url;
   const char* rel;
   bool valid;
   const char* url2;
   const char* rel2;
   bool valid2;
 } g_double_test_cases[] = {
@@ skipping 23 matching lines @@
   EXPECT_STREQ(test_case.url, header1.Url().Ascii().data());
   EXPECT_STREQ(test_case.rel, header1.Rel().Ascii().data());
   EXPECT_EQ(test_case.valid, header1.Valid());
   EXPECT_STREQ(test_case.url2, header2.Url().Ascii().data());
   EXPECT_STREQ(test_case.rel2, header2.Rel().Ascii().data());
   EXPECT_EQ(test_case.valid2, header2.Valid());
 }
 
 INSTANTIATE_TEST_CASE_P(LinkHeaderTest,
                         DoubleLinkHeaderTest,
-                        testing::ValuesIn(g_double_test_cases));
+                        ::testing::ValuesIn(g_double_test_cases));
 
 struct CrossOriginTestCase {
   const char* header_value;
   const char* url;
   const char* rel;
   const char* crossorigin;
   bool valid;
 } g_cross_origin_test_cases[] = {
     {"<http://whatever.com>; rel=preconnect", "http://whatever.com",
      "preconnect", nullptr, true},
@@ skipping 41 matching lines @@
   EXPECT_STREQ(test_case.rel, header.Rel().Ascii().data());
   EXPECT_EQ(test_case.valid, header.Valid());
   if (!test_case.crossorigin)
     EXPECT_TRUE(header.CrossOrigin().IsNull());
   else
     EXPECT_STREQ(test_case.crossorigin, header.CrossOrigin().Ascii().data());
 }
 
 INSTANTIATE_TEST_CASE_P(LinkHeaderTest,
                         CrossOriginLinkHeaderTest,
-                        testing::ValuesIn(g_cross_origin_test_cases));
+                        ::testing::ValuesIn(g_cross_origin_test_cases));
 
 }  // namespace
 }  // namespace blink