Move ContentVideoCaptureDeviceCore from src/content to src/media

content/browser/media/capture/smooth_event_sampler_unittest.cc

Index: content/browser/media/capture/smooth_event_sampler_unittest.cc
diff --git a/content/browser/media/capture/smooth_event_sampler_unittest.cc b/content/browser/media/capture/smooth_event_sampler_unittest.cc
deleted file mode 100644
index cfa974d0904cef1e952ecf6936f2abb422b46df9..0000000000000000000000000000000000000000
--- a/content/browser/media/capture/smooth_event_sampler_unittest.cc
+++ /dev/null
@@ -1,488 +0,0 @@
-// Copyright (c) 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/capture/smooth_event_sampler.h"
-
-#include "base/strings/stringprintf.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace content {
-
-namespace {
-
-bool AddEventAndConsiderSampling(SmoothEventSampler* sampler,
-                                 base::TimeTicks event_time) {
-  sampler->ConsiderPresentationEvent(event_time);
-  return sampler->ShouldSample();
-}
-
-void SteadyStateSampleAndAdvance(base::TimeDelta vsync,
-                                 SmoothEventSampler* sampler,
-                                 base::TimeTicks* t) {
-  ASSERT_TRUE(AddEventAndConsiderSampling(sampler, *t));
-  ASSERT_TRUE(sampler->HasUnrecordedEvent());
-  sampler->RecordSample();
-  ASSERT_FALSE(sampler->HasUnrecordedEvent());
-  ASSERT_FALSE(sampler->IsOverdueForSamplingAt(*t));
-  *t += vsync;
-  ASSERT_FALSE(sampler->IsOverdueForSamplingAt(*t));
-}
-
-void SteadyStateNoSampleAndAdvance(base::TimeDelta vsync,
-                                   SmoothEventSampler* sampler,
-                                   base::TimeTicks* t) {
-  ASSERT_FALSE(AddEventAndConsiderSampling(sampler, *t));
-  ASSERT_TRUE(sampler->HasUnrecordedEvent());
-  ASSERT_FALSE(sampler->IsOverdueForSamplingAt(*t));
-  *t += vsync;
-  ASSERT_FALSE(sampler->IsOverdueForSamplingAt(*t));
-}
-
-base::TimeTicks InitialTestTimeTicks() {
-  return base::TimeTicks() + base::TimeDelta::FromSeconds(1);
-}
-
-void TestRedundantCaptureStrategy(base::TimeDelta capture_period,
-                                  int redundant_capture_goal,
-                                  SmoothEventSampler* sampler,
-                                  base::TimeTicks* t) {
-  // Before any events have been considered, we're overdue for sampling.
-  ASSERT_TRUE(sampler->IsOverdueForSamplingAt(*t));
-
-  // Consider the first event.  We want to sample that.
-  ASSERT_FALSE(sampler->HasUnrecordedEvent());
-  ASSERT_TRUE(AddEventAndConsiderSampling(sampler, *t));
-  ASSERT_TRUE(sampler->HasUnrecordedEvent());
-  sampler->RecordSample();
-  ASSERT_FALSE(sampler->HasUnrecordedEvent());
-
-  // After more than 250 ms has passed without considering an event, we should
-  // repeatedly be overdue for sampling.  However, once the redundant capture
-  // goal is achieved, we should no longer be overdue for sampling.
-  *t += base::TimeDelta::FromMilliseconds(250);
-  for (int i = 0; i < redundant_capture_goal; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    ASSERT_FALSE(sampler->HasUnrecordedEvent());
-    ASSERT_TRUE(sampler->IsOverdueForSamplingAt(*t))
-        << "Should sample until redundant capture goal is hit";
-    sampler->RecordSample();
-    *t += capture_period;  // Timer fires once every capture period.
-  }
-  ASSERT_FALSE(sampler->IsOverdueForSamplingAt(*t))
-      << "Should not be overdue once redundant capture goal achieved.";
-}
-
-}  // namespace
-
-// 60Hz sampled at 30Hz should produce 30Hz.  In addition, this test contains
-// much more comprehensive before/after/edge-case scenarios than the others.
-TEST(SmoothEventSamplerTest, Sample60HertzAt30Hertz) {
-  const base::TimeDelta capture_period = base::TimeDelta::FromSeconds(1) / 30;
-  const int redundant_capture_goal = 200;
-  const base::TimeDelta vsync = base::TimeDelta::FromSeconds(1) / 60;
-
-  SmoothEventSampler sampler(capture_period, redundant_capture_goal);
-  base::TimeTicks t = InitialTestTimeTicks();
-
-  TestRedundantCaptureStrategy(capture_period, redundant_capture_goal,
-                               &sampler, &t);
-
-  // Steady state, we should capture every other vsync, indefinitely.
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-  }
-
-  // Now pretend we're limited by backpressure in the pipeline. In this scenario
-  // case we are adding events but not sampling them.
-  for (int i = 0; i < 20; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    ASSERT_EQ(i >= 14, sampler.IsOverdueForSamplingAt(t));
-    ASSERT_TRUE(AddEventAndConsiderSampling(&sampler, t));
-    ASSERT_TRUE(sampler.HasUnrecordedEvent());
-    t += vsync;
-  }
-
-  // Now suppose we can sample again. We should be back in the steady state,
-  // but at a different phase.
-  ASSERT_TRUE(sampler.IsOverdueForSamplingAt(t));
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-  }
-}
-
-// 50Hz sampled at 30Hz should produce a sequence where some frames are skipped.
-TEST(SmoothEventSamplerTest, Sample50HertzAt30Hertz) {
-  const base::TimeDelta capture_period = base::TimeDelta::FromSeconds(1) / 30;
-  const int redundant_capture_goal = 2;
-  const base::TimeDelta vsync = base::TimeDelta::FromSeconds(1) / 50;
-
-  SmoothEventSampler sampler(capture_period, redundant_capture_goal);
-  base::TimeTicks t = InitialTestTimeTicks();
-
-  TestRedundantCaptureStrategy(capture_period, redundant_capture_goal,
-                               &sampler, &t);
-
-  // Steady state, we should capture 1st, 2nd and 4th frames out of every five
-  // frames, indefinitely.
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-  }
-
-  // Now pretend we're limited by backpressure in the pipeline. In this scenario
-  // case we are adding events but not sampling them.
-  for (int i = 0; i < 20; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    ASSERT_EQ(i >= 11, sampler.IsOverdueForSamplingAt(t));
-    ASSERT_TRUE(AddEventAndConsiderSampling(&sampler, t));
-    t += vsync;
-  }
-
-  // Now suppose we can sample again. We should be back in the steady state
-  // again.
-  ASSERT_TRUE(sampler.IsOverdueForSamplingAt(t));
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-  }
-}
-
-// 75Hz sampled at 30Hz should produce a sequence where some frames are skipped.
-TEST(SmoothEventSamplerTest, Sample75HertzAt30Hertz) {
-  const base::TimeDelta capture_period = base::TimeDelta::FromSeconds(1) / 30;
-  const int redundant_capture_goal = 32;
-  const base::TimeDelta vsync = base::TimeDelta::FromSeconds(1) / 75;
-
-  SmoothEventSampler sampler(capture_period, redundant_capture_goal);
-  base::TimeTicks t = InitialTestTimeTicks();
-
-  TestRedundantCaptureStrategy(capture_period, redundant_capture_goal,
-                               &sampler, &t);
-
-  // Steady state, we should capture 1st and 3rd frames out of every five
-  // frames, indefinitely.
-  SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-  }
-
-  // Now pretend we're limited by backpressure in the pipeline. In this scenario
-  // case we are adding events but not sampling them.
-  for (int i = 0; i < 20; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    ASSERT_EQ(i >= 16, sampler.IsOverdueForSamplingAt(t));
-    ASSERT_TRUE(AddEventAndConsiderSampling(&sampler, t));
-    t += vsync;
-  }
-
-  // Now suppose we can sample again. We capture the next frame, and not the one
-  // after that, and then we're back in the steady state again.
-  ASSERT_TRUE(sampler.IsOverdueForSamplingAt(t));
-  SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-  }
-}
-
-// 30Hz sampled at 30Hz should produce 30Hz.
-TEST(SmoothEventSamplerTest, Sample30HertzAt30Hertz) {
-  const base::TimeDelta capture_period = base::TimeDelta::FromSeconds(1) / 30;
-  const int redundant_capture_goal = 1;
-  const base::TimeDelta vsync = base::TimeDelta::FromSeconds(1) / 30;
-
-  SmoothEventSampler sampler(capture_period, redundant_capture_goal);
-  base::TimeTicks t = InitialTestTimeTicks();
-
-  TestRedundantCaptureStrategy(capture_period, redundant_capture_goal,
-                               &sampler, &t);
-
-  // Steady state, we should capture every vsync, indefinitely.
-  for (int i = 0; i < 200; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  }
-
-  // Now pretend we're limited by backpressure in the pipeline. In this scenario
-  // case we are adding events but not sampling them.
-  for (int i = 0; i < 10; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    ASSERT_EQ(i >= 7, sampler.IsOverdueForSamplingAt(t));
-    ASSERT_TRUE(AddEventAndConsiderSampling(&sampler, t));
-    t += vsync;
-  }
-
-  // Now suppose we can sample again. We should be back in the steady state.
-  ASSERT_TRUE(sampler.IsOverdueForSamplingAt(t));
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  }
-}
-
-// 24Hz sampled at 30Hz should produce 24Hz.
-TEST(SmoothEventSamplerTest, Sample24HertzAt30Hertz) {
-  const base::TimeDelta capture_period = base::TimeDelta::FromSeconds(1) / 30;
-  const int redundant_capture_goal = 333;
-  const base::TimeDelta vsync = base::TimeDelta::FromSeconds(1) / 24;
-
-  SmoothEventSampler sampler(capture_period, redundant_capture_goal);
-  base::TimeTicks t = InitialTestTimeTicks();
-
-  TestRedundantCaptureStrategy(capture_period, redundant_capture_goal,
-                               &sampler, &t);
-
-  // Steady state, we should capture every vsync, indefinitely.
-  for (int i = 0; i < 200; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  }
-
-  // Now pretend we're limited by backpressure in the pipeline. In this scenario
-  // case we are adding events but not sampling them.
-  for (int i = 0; i < 10; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    ASSERT_EQ(i >= 6, sampler.IsOverdueForSamplingAt(t));
-    ASSERT_TRUE(AddEventAndConsiderSampling(&sampler, t));
-    t += vsync;
-  }
-
-  // Now suppose we can sample again. We should be back in the steady state.
-  ASSERT_TRUE(sampler.IsOverdueForSamplingAt(t));
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  }
-}
-
-// Tests that changing the minimum capture period during usage results in the
-// desired behavior.
-TEST(SmoothEventSamplerTest, Sample60HertzWithVariedCapturePeriods) {
-  const base::TimeDelta vsync = base::TimeDelta::FromSeconds(1) / 60;
-  const base::TimeDelta one_to_one_period = vsync;
-  const base::TimeDelta two_to_one_period = vsync * 2;
-  const base::TimeDelta two_and_three_to_one_period =
-      base::TimeDelta::FromSeconds(1) / 24;
-  const int redundant_capture_goal = 1;
-
-  SmoothEventSampler sampler(one_to_one_period, redundant_capture_goal);
-  base::TimeTicks t = InitialTestTimeTicks();
-
-  TestRedundantCaptureStrategy(one_to_one_period, redundant_capture_goal,
-                               &sampler, &t);
-
-  // With the capture rate at 60 Hz, we should capture every vsync.
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  }
-
-  // Now change to the capture rate to 30 Hz, and we should capture every other
-  // vsync.
-  sampler.SetMinCapturePeriod(two_to_one_period);
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  }
-
-  // Now change the capture rate back to 60 Hz, and we should capture every
-  // vsync again.
-  sampler.SetMinCapturePeriod(one_to_one_period);
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  }
-
-  // Now change the capture rate to 24 Hz, and we should capture with a 2-3-2-3
-  // cadence.
-  sampler.SetMinCapturePeriod(two_and_three_to_one_period);
-  for (int i = 0; i < 100; i++) {
-    SCOPED_TRACE(base::StringPrintf("Iteration %d", i));
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateNoSampleAndAdvance(vsync, &sampler, &t);
-    SteadyStateSampleAndAdvance(vsync, &sampler, &t);
-  }
-}
-
-TEST(SmoothEventSamplerTest, DoubleDrawAtOneTimeStillDirties) {
-  const base::TimeDelta capture_period = base::TimeDelta::FromSeconds(1) / 30;
-  const base::TimeDelta overdue_period = base::TimeDelta::FromSeconds(1);
-
-  SmoothEventSampler sampler(capture_period, 1);
-  base::TimeTicks t = InitialTestTimeTicks();
-
-  ASSERT_TRUE(AddEventAndConsiderSampling(&sampler, t));
-  sampler.RecordSample();
-  ASSERT_FALSE(sampler.IsOverdueForSamplingAt(t))
-      << "Sampled last event; should not be dirty.";
-  t += overdue_period;
-
-  // Now simulate 2 events with the same clock value.
-  ASSERT_TRUE(AddEventAndConsiderSampling(&sampler, t));
-  sampler.RecordSample();
-  ASSERT_FALSE(AddEventAndConsiderSampling(&sampler, t))
-      << "Two events at same time -- expected second not to be sampled.";
-  ASSERT_TRUE(sampler.IsOverdueForSamplingAt(t + overdue_period))
-      << "Second event should dirty the capture state.";
-  sampler.RecordSample();
-  ASSERT_FALSE(sampler.IsOverdueForSamplingAt(t + overdue_period));
-}
-
-namespace {
-
-struct DataPoint {
-  bool should_capture;
-  double increment_ms;
-};
-
-void ReplayCheckingSamplerDecisions(const DataPoint* data_points,
-                                    size_t num_data_points,
-                                    SmoothEventSampler* sampler) {
-  base::TimeTicks t = InitialTestTimeTicks();
-  for (size_t i = 0; i < num_data_points; ++i) {
-    t += base::TimeDelta::FromMicroseconds(
-        static_cast<int64>(data_points[i].increment_ms * 1000));
-    ASSERT_EQ(data_points[i].should_capture,
-              AddEventAndConsiderSampling(sampler, t))
-        << "at data_points[" << i << ']';
-    if (data_points[i].should_capture)
-      sampler->RecordSample();
-  }
-}
-
-}  // namespace
-
-TEST(SmoothEventSamplerTest, DrawingAt24FpsWith60HzVsyncSampledAt30Hertz) {
-  // Actual capturing of timing data: Initial instability as a 24 FPS video was
-  // started from a still screen, then clearly followed by steady-state.
-  static const DataPoint data_points[] = {
-    { true, 1437.93 }, { true, 150.484 }, { true, 217.362 }, { true, 50.161 },
-    { true, 33.44 }, { false, 0 }, { true, 16.721 }, { true, 66.88 },
-    { true, 50.161 }, { false, 0 }, { false, 0 }, { true, 50.16 },
-    { true, 33.441 }, { true, 16.72 }, { false, 16.72 }, { true, 117.041 },
-    { true, 16.72 }, { false, 16.72 }, { true, 50.161 }, { true, 50.16 },
-    { true, 33.441 }, { true, 33.44 }, { true, 33.44 }, { true, 16.72 },
-    { false, 0 }, { true, 50.161 }, { false, 0 }, { true, 33.44 },
-    { true, 16.72 }, { false, 16.721 }, { true, 66.881 }, { false, 0 },
-    { true, 33.441 }, { true, 16.72 }, { true, 50.16 }, { true, 16.72 },
-    { false, 16.721 }, { true, 50.161 }, { true, 50.16 }, { false, 0 },
-    { true, 33.441 }, { true, 50.337 }, { true, 50.183 }, { true, 16.722 },
-    { true, 50.161 }, { true, 33.441 }, { true, 50.16 }, { true, 33.441 },
-    { true, 50.16 }, { true, 33.441 }, { true, 50.16 }, { true, 33.44 },
-    { true, 50.161 }, { true, 50.16 }, { true, 33.44 }, { true, 33.441 },
-    { true, 50.16 }, { true, 50.161 }, { true, 33.44 }, { true, 33.441 },
-    { true, 50.16 }, { true, 33.44 }, { true, 50.161 }, { true, 33.44 },
-    { true, 50.161 }, { true, 33.44 }, { true, 50.161 }, { true, 33.44 },
-    { true, 83.601 }, { true, 16.72 }, { true, 33.44 }, { false, 0 }
-  };
-
-  SmoothEventSampler sampler(base::TimeDelta::FromSeconds(1) / 30, 3);
-  ReplayCheckingSamplerDecisions(data_points, arraysize(data_points), &sampler);
-}
-
-TEST(SmoothEventSamplerTest, DrawingAt30FpsWith60HzVsyncSampledAt30Hertz) {
-  // Actual capturing of timing data: Initial instability as a 30 FPS video was
-  // started from a still screen, then followed by steady-state.  Drawing
-  // framerate from the video rendering was a bit volatile, but averaged 30 FPS.
-  static const DataPoint data_points[] = {
-    { true, 2407.69 }, { true, 16.733 }, { true, 217.362 }, { true, 33.441 },
-    { true, 33.44 }, { true, 33.44 }, { true, 33.441 }, { true, 33.44 },
-    { true, 33.44 }, { true, 33.441 }, { true, 33.44 }, { true, 33.44 },
-    { true, 16.721 }, { true, 33.44 }, { false, 0 }, { true, 50.161 },
-    { true, 50.16 }, { false, 0 }, { true, 50.161 }, { true, 33.44 },
-    { true, 16.72 }, { false, 0 }, { false, 16.72 }, { true, 66.881 },
-    { false, 0 }, { true, 33.44 }, { true, 16.72 }, { true, 50.161 },
-    { false, 0 }, { true, 33.538 }, { true, 33.526 }, { true, 33.447 },
-    { true, 33.445 }, { true, 33.441 }, { true, 16.721 }, { true, 33.44 },
-    { true, 33.44 }, { true, 50.161 }, { true, 16.72 }, { true, 33.44 },
-    { true, 33.441 }, { true, 33.44 }, { false, 0 }, { false, 16.72 },
-    { true, 66.881 }, { true, 16.72 }, { false, 16.72 }, { true, 50.16 },
-    { true, 33.441 }, { true, 33.44 }, { true, 33.44 }, { true, 33.44 },
-    { true, 33.441 }, { true, 33.44 }, { true, 50.161 }, { false, 0 },
-    { true, 33.44 }, { true, 33.44 }, { true, 50.161 }, { true, 16.72 },
-    { true, 33.44 }, { true, 33.441 }, { false, 0 }, { true, 66.88 },
-    { true, 33.441 }, { true, 33.44 }, { true, 33.44 }, { false, 0 },
-    { true, 33.441 }, { true, 33.44 }, { true, 33.44 }, { false, 0 },
-    { true, 16.72 }, { true, 50.161 }, { false, 0 }, { true, 50.16 },
-    { false, 0.001 }, { true, 16.721 }, { true, 66.88 }, { true, 33.44 },
-    { true, 33.441 }, { true, 33.44 }, { true, 50.161 }, { true, 16.72 },
-    { false, 0 }, { true, 33.44 }, { false, 16.72 }, { true, 66.881 },
-    { true, 33.44 }, { true, 16.72 }, { true, 33.441 }, { false, 16.72 },
-    { true, 66.88 }, { true, 16.721 }, { true, 50.16 }, { true, 33.44 },
-    { true, 16.72 }, { true, 33.441 }, { true, 33.44 }, { true, 33.44 }
-  };
-
-  SmoothEventSampler sampler(base::TimeDelta::FromSeconds(1) / 30, 3);
-  ReplayCheckingSamplerDecisions(data_points, arraysize(data_points), &sampler);
-}
-
-TEST(SmoothEventSamplerTest, DrawingAt60FpsWith60HzVsyncSampledAt30Hertz) {
-  // Actual capturing of timing data: WebGL Acquarium demo
-  // (http://webglsamples.googlecode.com/hg/aquarium/aquarium.html) which ran
-  // between 55-60 FPS in the steady-state.
-  static const DataPoint data_points[] = {
-    { true, 16.72 }, { true, 16.72 }, { true, 4163.29 }, { true, 50.193 },
-    { true, 117.041 }, { true, 50.161 }, { true, 50.16 }, { true, 33.441 },
-    { true, 50.16 }, { true, 33.44 }, { false, 0 }, { false, 0 },
-    { true, 50.161 }, { true, 83.601 }, { true, 50.16 }, { true, 16.72 },
-    { true, 33.441 }, { false, 16.72 }, { true, 50.16 }, { true, 16.72 },
-    { false, 0.001 }, { true, 33.441 }, { false, 16.72 }, { true, 16.72 },
-    { true, 50.16 }, { false, 0 }, { true, 16.72 }, { true, 33.441 },
-    { false, 0 }, { true, 33.44 }, { false, 16.72 }, { true, 16.72 },
-    { true, 50.161 }, { false, 0 }, { true, 16.72 }, { true, 33.44 },
-    { false, 0 }, { true, 33.44 }, { false, 16.721 }, { true, 16.721 },
-    { true, 50.161 }, { false, 0 }, { true, 16.72 }, { true, 33.441 },
-    { false, 0 }, { true, 33.44 }, { false, 16.72 }, { true, 33.44 },
-    { false, 0 }, { true, 16.721 }, { true, 50.161 }, { false, 0 },
-    { true, 33.44 }, { false, 0 }, { true, 16.72 }, { true, 33.441 },
-    { false, 0 }, { true, 33.44 }, { false, 16.72 }, { true, 16.72 },
-    { true, 50.16 }, { false, 0 }, { true, 16.721 }, { true, 33.44 },
-    { false, 0 }, { true, 33.44 }, { false, 16.721 }, { true, 16.721 },
-    { true, 50.161 }, { false, 0 }, { true, 16.72 }, { true, 33.44 },
-    { false, 0 }, { true, 33.441 }, { false, 16.72 }, { true, 16.72 },
-    { true, 50.16 }, { false, 0 }, { true, 16.72 }, { true, 33.441 },
-    { true, 33.44 }, { false, 0 }, { true, 33.44 }, { true, 33.441 },
-    { false, 0 }, { true, 33.44 }, { true, 33.441 }, { false, 0 },
-    { true, 33.44 }, { false, 0 }, { true, 33.44 }, { false, 16.72 },
-    { true, 16.721 }, { true, 50.161 }, { false, 0 }, { true, 16.72 },
-    { true, 33.44 }, { true, 33.441 }, { false, 0 }, { true, 33.44 },
-    { true, 33.44 }, { false, 0 }, { true, 33.441 }, { false, 16.72 },
-    { true, 16.72 }, { true, 50.16 }, { false, 0 }, { true, 16.72 },
-    { true, 33.441 }, { false, 0 }, { true, 33.44 }, { false, 16.72 },
-    { true, 33.44 }, { false, 0 }, { true, 16.721 }, { true, 50.161 },
-    { false, 0 }, { true, 16.72 }, { true, 33.44 }, { false, 0 },
-    { true, 33.441 }, { false, 16.72 }, { true, 16.72 }, { true, 50.16 }
-  };
-
-  SmoothEventSampler sampler(base::TimeDelta::FromSeconds(1) / 30, 3);
-  ReplayCheckingSamplerDecisions(data_points, arraysize(data_points), &sampler);
-}
-
-}  // namespace content