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

third_party/WebKit/Source/core/dom/StaticRangeTest.cpp

 // Copyright 2016 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 "core/dom/StaticRange.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/V8BindingForTesting.h"
 #include "core/dom/Element.h"
 #include "core/dom/NodeList.h"
 #include "core/dom/Range.h"
 #include "core/dom/Text.h"
 #include "core/html/HTMLBodyElement.h"
 #include "core/html/HTMLDocument.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLHtmlElement.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/Compiler.h"
 #include "platform/wtf/RefPtr.h"
 #include "platform/wtf/text/AtomicString.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
-class StaticRangeTest : public testing::Test {
+class StaticRangeTest : public ::testing::Test {
  protected:
   void SetUp() override;
 
   HTMLDocument& GetDocument() const;
 
  private:
   Persistent<HTMLDocument> document_;
 };
 
 void StaticRangeTest::SetUp() {
@@ skipping 211 matching lines @@
   EXPECT_EQ(old_text, static_range04->endContainer());
   EXPECT_EQ(4u, static_range04->endOffset());
 
   // Invalid StaticRange.
   DummyExceptionStateForTesting exception_state;
   static_range04->toRange(exception_state);
   EXPECT_TRUE(exception_state.HadException());
 }
 
 }  // namespace blink