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

third_party/WebKit/Source/core/page/scrolling/ScrollStateTest.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 "core/page/scrolling/ScrollState.h"
 
 #include <memory>
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "platform/wtf/PtrUtil.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
 namespace {
 
 ScrollState* CreateScrollState(double delta_x,
                                double delta_y,
                                bool beginning,
                                bool ending) {
   std::unique_ptr<ScrollStateData> scroll_state_data =
       WTF::MakeUnique<ScrollStateData>();
   scroll_state_data->delta_x = delta_x;
   scroll_state_data->delta_y = delta_y;
   scroll_state_data->is_beginning = beginning;
   scroll_state_data->is_ending = ending;
   return ScrollState::Create(std::move(scroll_state_data));
 }
 
-class ScrollStateTest : public testing::Test {};
+class ScrollStateTest : public ::testing::Test {};
 
 TEST_F(ScrollStateTest, ConsumeDeltaNative) {
   const float kDeltaX = 12.3;
   const float kDeltaY = 3.9;
 
   const float kDeltaXToConsume = 1.2;
   const float kDeltaYToConsume = 2.3;
 
   ScrollState* scroll_state = CreateScrollState(kDeltaX, kDeltaY, false, false);
   EXPECT_FLOAT_EQ(kDeltaX, scroll_state->deltaX());
@@ skipping 38 matching lines @@
   ScrollState* scroll_state = CreateScrollState(0, 0, false, false);
   ScrollState* scroll_state_end = CreateScrollState(0, 0, false, true);
   EXPECT_FALSE(scroll_state_begin->FullyConsumed());
   EXPECT_TRUE(scroll_state->FullyConsumed());
   EXPECT_FALSE(scroll_state_end->FullyConsumed());
 }
 
 }  // namespace
 
 }  // namespace blink