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

third_party/WebKit/Source/platform/scheduler/child/scheduler_helper_unittest.cc

 // 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/scheduler/child/scheduler_helper.h"
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "cc/test/ordered_simple_task_runner.h"
 #include "platform/scheduler/base/lazy_now.h"
 #include "platform/scheduler/base/task_queue.h"
 #include "platform/scheduler/base/test_time_source.h"
 #include "platform/scheduler/child/scheduler_tqm_delegate_for_test.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using testing::_;
-using testing::AnyNumber;
-using testing::Invoke;
-using testing::Return;
+using ::testing::_;
+using ::testing::AnyNumber;
+using ::testing::Invoke;
+using ::testing::Return;
 
 namespace blink {
 namespace scheduler {
 
 namespace {
 void AppendToVectorTestTask(std::vector<std::string>* vector,
                             std::string value) {
   vector->push_back(value);
 }
 
 void AppendToVectorReentrantTask(base::SingleThreadTaskRunner* task_runner,
                                  std::vector<int>* vector,
                                  int* reentrant_count,
                                  int max_reentrant_count) {
   vector->push_back((*reentrant_count)++);
   if (*reentrant_count < max_reentrant_count) {
     task_runner->PostTask(
         FROM_HERE,
         base::Bind(AppendToVectorReentrantTask, base::Unretained(task_runner),
                    vector, reentrant_count, max_reentrant_count));
   }
 }
 
 };  // namespace
 
-class SchedulerHelperTest : public testing::Test {
+class SchedulerHelperTest : public ::testing::Test {
  public:
   SchedulerHelperTest()
       : clock_(new base::SimpleTestTickClock()),
         mock_task_runner_(new cc::OrderedSimpleTaskRunner(clock_.get(), false)),
         main_task_runner_(SchedulerTqmDelegateForTest::Create(
             mock_task_runner_,
             base::WrapUnique(new TestTimeSource(clock_.get())))),
         scheduler_helper_(new SchedulerHelper(main_task_runner_)),
         default_task_runner_(scheduler_helper_->DefaultTaskQueue()) {
     clock_->Advance(base::TimeDelta::FromMicroseconds(5000));
@@ skipping 37 matching lines @@
       FROM_HERE, base::Bind(&AppendToVectorTestTask, &run_order, "D1"));
   default_task_runner_->PostTask(
       FROM_HERE, base::Bind(&AppendToVectorTestTask, &run_order, "D2"));
   default_task_runner_->PostTask(
       FROM_HERE, base::Bind(&AppendToVectorTestTask, &run_order, "D3"));
   default_task_runner_->PostTask(
       FROM_HERE, base::Bind(&AppendToVectorTestTask, &run_order, "D4"));
 
   RunUntilIdle();
   EXPECT_THAT(run_order,
-              testing::ElementsAre(std::string("D1"), std::string("D2"),
-                                   std::string("D3"), std::string("D4")));
+              ::testing::ElementsAre(std::string("D1"), std::string("D2"),
+                                     std::string("D3"), std::string("D4")));
 }
 
 TEST_F(SchedulerHelperTest, TestRentrantTask) {
   int count = 0;
   std::vector<int> run_order;
   default_task_runner_->PostTask(
       FROM_HERE, base::Bind(AppendToVectorReentrantTask,
                             base::RetainedRef(default_task_runner_), &run_order,
                             &count, 5));
   RunUntilIdle();
 
-  EXPECT_THAT(run_order, testing::ElementsAre(0, 1, 2, 3, 4));
+  EXPECT_THAT(run_order, ::testing::ElementsAre(0, 1, 2, 3, 4));
 }
 
 TEST_F(SchedulerHelperTest, IsShutdown) {
   EXPECT_FALSE(scheduler_helper_->IsShutdown());
 
   scheduler_helper_->Shutdown();
   EXPECT_TRUE(scheduler_helper_->IsShutdown());
 }
 
 TEST_F(SchedulerHelperTest, DefaultTaskRunnerRegistration) {
@@ skipping 93 matching lines @@
   voter->SetQueueEnabled(false);
 
   EXPECT_CALL(observer, OnTriedToExecuteBlockedTask(_, _)).Times(1);
   RunUntilIdle();
 
   scheduler_helper_->SetObserver(nullptr);
 }
 
 }  // namespace scheduler
 }  // namespace blink