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

third_party/WebKit/Source/core/editing/KeyboardTest.cpp

 /*
  * Copyright (C) 2010 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 23 matching lines @@
 #include "core/events/EventTarget.h"
 #include "core/events/KeyboardEvent.h"
 #include "core/frame/Settings.h"
 #include "platform/KeyboardCodes.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebInputEvent.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
-class KeyboardTest : public testing::Test {
+class KeyboardTest : public ::testing::Test {
  public:
   // Pass a WebKeyboardEvent into the EditorClient and get back the string
   // name of which editing event that key causes.
   // E.g., sending in the enter key gives back "InsertNewline".
   const char* InterpretKeyEvent(const WebKeyboardEvent& web_keyboard_event) {
     KeyboardEvent* keyboard_event =
         KeyboardEvent::Create(web_keyboard_event, 0);
     std::unique_ptr<Settings> settings = Settings::Create();
     EditingBehavior behavior(settings->GetEditingBehaviorType());
     return behavior.InterpretKeyEvent(*keyboard_event);
@@ skipping 119 matching lines @@
     const char* command;
   } kDomKeyTestCases[] = {
       {"Copy", "Copy"}, {"Cut", "Cut"}, {"Paste", "Paste"},
   };
 
   for (const auto& test_case : kDomKeyTestCases)
     EXPECT_STREQ(test_case.command, InterpretDomKey(test_case.key));
 }
 
 }  // namespace blink