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

third_party/WebKit/Source/platform/graphics/paint/CullRectTest.cpp

 // Copyright 2014 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/graphics/paint/CullRect.h"
 
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/LayoutRect.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace blink {
 
-class CullRectTest : public testing::Test {
+class CullRectTest : public ::testing::Test {
  protected:
   IntRect Rect(const CullRect& cull_rect) { return cull_rect.rect_; }
 };
 
 TEST_F(CullRectTest, IntersectsCullRect) {
   CullRect cull_rect(IntRect(0, 0, 50, 50));
 
   EXPECT_TRUE(cull_rect.IntersectsCullRect(IntRect(0, 0, 1, 1)));
   EXPECT_FALSE(cull_rect.IntersectsCullRect(IntRect(51, 51, 1, 1)));
 }
@@ skipping 46 matching lines @@
   transform.Translate(10, 15);
   cull_rect.UpdateForScrollingContents(IntRect(20, 10, 40, 50), transform);
 
   // Clipped: (20, 10, 30, 50)
   // Expanded: (-3980, -3990, 8030, 8050)
   // Inverse transformed: (-3990, -4005, 8030, 8050)
   EXPECT_EQ(IntRect(-3990, -4005, 8030, 8050), Rect(cull_rect));
 }
 
 }  // namespace blink