Use TimeTicks for MediaSessionUmaHelper.

content/browser/media/session/media_session_uma_helper_unittest.cc

 // 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 "content/browser/media/session/media_session_uma_helper.h"
 
 #include "base/metrics/histogram_samples.h"
 #include "base/test/histogram_tester.h"
-#include "base/test/simple_test_clock.h"
+#include "base/test/simple_test_tick_clock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 using MediaSessionSuspendedSource =
     MediaSessionUmaHelper::MediaSessionSuspendedSource;
 
 namespace {
 
 class MediaSessionUmaHelperTest : public testing::Test {
  public:
   MediaSessionUmaHelperTest() = default;
 
   void SetUp() override {
-    clock_ = new base::SimpleTestClock();
-    clock_->SetNow(base::Time::Now());
+    clock_ = new base::SimpleTestTickClock();
+    clock_->SetNowTicks(base::TimeTicks::Now());
     media_session_uma_helper_.SetClockForTest(
-        std::unique_ptr<base::SimpleTestClock>(clock_));
+        std::unique_ptr<base::SimpleTestTickClock>(clock_));
   }
 
   void TearDown() override {
     clock_ = nullptr;
   }
 
-  base::SimpleTestClock* clock() { return clock_; }
+  base::SimpleTestTickClock* clock() { return clock_; }
 
   MediaSessionUmaHelper& media_session_uma_helper() {
     return media_session_uma_helper_;
   };
 
   std::unique_ptr<base::HistogramSamples> GetHistogramSamplesSinceTestStart(
       const std::string& name) {
     return histogram_tester_.GetHistogramSamplesSinceCreation(name);
   }
 
  private:
-  base::SimpleTestClock* clock_ = nullptr;
+  base::SimpleTestTickClock* clock_ = nullptr;
   MediaSessionUmaHelper media_session_uma_helper_;
   base::HistogramTester histogram_tester_;
 };
 
 }  // anonymous namespace
 
 TEST_F(MediaSessionUmaHelperTest, CreateAndKillDoesNothing) {
   {
     MediaSessionUmaHelper* uma_helper = new MediaSessionUmaHelper();
     delete uma_helper;
@@ skipping 249 matching lines @@
   media_session_uma_helper().OnSessionInactive();
 
   // If the session is already inactive, OnSessionInactive() calls are ignored.
   std::unique_ptr<base::HistogramSamples> samples(
       GetHistogramSamplesSinceTestStart("Media.Session.ActiveTime"));
   EXPECT_EQ(1, samples->TotalCount());
   EXPECT_EQ(1, samples->GetCount(3000));
 }
 
 }  // namespace content