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

third_party/WebKit/Source/platform/fonts/SmallCapsIteratorTest.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/fonts/SmallCapsIterator.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include <string>
 
 namespace blink {
 
 struct TestRun {
   std::string text;
   SmallCapsIterator::SmallCapsBehavior code;
 };
 
 struct ExpectedRun {
   unsigned limit;
   SmallCapsIterator::SmallCapsBehavior small_caps_behavior;
 
   ExpectedRun(unsigned the_limit,
               SmallCapsIterator::SmallCapsBehavior the_small_caps_behavior)
       : limit(the_limit), small_caps_behavior(the_small_caps_behavior) {}
 };
 
-class SmallCapsIteratorTest : public testing::Test {
+class SmallCapsIteratorTest : public ::testing::Test {
  protected:
   void CheckRuns(const Vector<TestRun>& runs) {
     String text(g_empty_string16_bit);
     Vector<ExpectedRun> expect;
     for (auto& run : runs) {
       text.append(String::FromUTF8(run.text.c_str()));
       expect.push_back(ExpectedRun(text.length(), run.code));
     }
     SmallCapsIterator small_caps_iterator(text.Characters16(), text.length());
     VerifyRuns(&small_caps_iterator, expect);
@@ skipping 70 matching lines @@
 TEST_F(SmallCapsIteratorTest, Armenian) {
   CHECK_RUNS({{"աբգդ", SmallCapsIterator::kSmallCapsUppercaseNeeded},
               {"ԵԶԷԸ", SmallCapsIterator::kSmallCapsSameCase}});
 }
 
 TEST_F(SmallCapsIteratorTest, CombiningCharacterSequence) {
   CHECK_RUNS({{"èü", SmallCapsIterator::kSmallCapsUppercaseNeeded}});
 }
 
 }  // namespace blink