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

third_party/WebKit/Source/platform/PODArenaTest.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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 33 matching lines @@
 };
 
 struct TestClass2 {
   TestClass2() : a(1), b(2), c(3), d(4) {}
 
   float a, b, c, d;
 };
 
 }  // anonymous namespace
 
-class PODArenaTest : public testing::Test {};
+class PODArenaTest : public ::testing::Test {};
 
 // Make sure the arena can successfully allocate from more than one
 // region.
 TEST_F(PODArenaTest, CanAllocateFromMoreThanOneRegion) {
   RefPtr<TrackedAllocator> allocator = TrackedAllocator::Create();
   RefPtr<PODArena> arena = PODArena::Create(allocator);
   int num_iterations = 10 * PODArena::kDefaultChunkSize / sizeof(TestClass1);
   for (int i = 0; i < num_iterations; ++i)
     arena->AllocateObject<TestClass1>();
   EXPECT_GT(allocator->NumRegions(), 1);
@@ skipping 22 matching lines @@
     EXPECT_EQ(1, tc1->w);
     TestClass2* tc2 = arena->AllocateObject<TestClass2>();
     EXPECT_EQ(1, tc2->a);
     EXPECT_EQ(2, tc2->b);
     EXPECT_EQ(3, tc2->c);
     EXPECT_EQ(4, tc2->d);
   }
 }
 
 }  // namespace blink