Change the TimeSource interface to return wallclock time for video.

media/filters/audio_clock_unittest.cc

Index: media/filters/audio_clock_unittest.cc
diff --git a/media/filters/audio_clock_unittest.cc b/media/filters/audio_clock_unittest.cc
index 557fa7c968627ec167f04f5cbd056d52650ba3ff..7b4d85fd0668431046bc0f3953fe5f0031b35e02 100644
--- a/media/filters/audio_clock_unittest.cc
+++ b/media/filters/audio_clock_unittest.cc
@@ -34,11 +34,6 @@ class AudioClockTest : public testing::Test {
     return clock_.back_timestamp().InMilliseconds();
   }
 
-  int TimestampSinceLastWritingInMilliseconds(int milliseconds) {
-    return clock_.TimestampSinceWriting(base::TimeDelta::FromMilliseconds(
-                                            milliseconds)).InMilliseconds();
-  }
-
   int TimeUntilPlaybackInMilliseconds(int timestamp_ms) {
     return clock_.TimeUntilPlayback(base::TimeDelta::FromMilliseconds(
                                         timestamp_ms)).InMilliseconds();
@@ -78,14 +73,6 @@ TEST_F(AudioClockTest, BackTimestampStartsAtStartTimestamp) {
   EXPECT_EQ(expected, clock.back_timestamp());
 }
 
-TEST_F(AudioClockTest, TimestampSinceWritingStartsAtStartTimestamp) {
-  base::TimeDelta expected = base::TimeDelta::FromSeconds(123);
-  AudioClock clock(expected, sample_rate_);
-
-  base::TimeDelta time_since_writing = base::TimeDelta::FromSeconds(456);
-  EXPECT_EQ(expected, clock.TimestampSinceWriting(time_since_writing));
-}
-
 TEST_F(AudioClockTest, ContiguousAudioDataBufferedStartsAtZero) {
   EXPECT_EQ(base::TimeDelta(), clock_.contiguous_audio_data_buffered());
 }
@@ -280,47 +267,6 @@ TEST_F(AudioClockTest, ZeroDelay) {
   EXPECT_EQ(0, ContiguousAudioDataBufferedInMilliseconds());
 }
 
-TEST_F(AudioClockTest, TimestampSinceLastWriting) {
-  // Construct an audio clock with the following representation:
-  //
-  // |- existing  delay -|------------ calls to WroteAudio() -----------------|
-  // +-------------------+----------------+------------------+----------------+
-  // | 20 frames silence | 10 frames @ 1x | 10 frames @ 0.5x | 10 frames @ 2x |
-  // +-------------------+----------------+------------------+----------------+
-  // Media timestamp:    0              1000               1500             3500
-  // Wall clock time:  2000             3000               4000             5000
-  WroteAudio(10, 10, 40, 1.0);
-  WroteAudio(10, 10, 40, 0.5);
-  WroteAudio(10, 10, 40, 2.0);
-  EXPECT_EQ(0, FrontTimestampInMilliseconds());
-  EXPECT_EQ(3500, BackTimestampInMilliseconds());
-  EXPECT_EQ(0, ContiguousAudioDataBufferedInMilliseconds());
-
-  // Simulate passing 2000ms of initial delay in the audio hardware.
-  EXPECT_EQ(0, TimestampSinceLastWritingInMilliseconds(0));
-  EXPECT_EQ(0, TimestampSinceLastWritingInMilliseconds(500));
-  EXPECT_EQ(0, TimestampSinceLastWritingInMilliseconds(1000));
-  EXPECT_EQ(0, TimestampSinceLastWritingInMilliseconds(1500));
-  EXPECT_EQ(0, TimestampSinceLastWritingInMilliseconds(2000));
-
-  // Now we should see the 1.0x buffer.
-  EXPECT_EQ(500, TimestampSinceLastWritingInMilliseconds(2500));
-  EXPECT_EQ(1000, TimestampSinceLastWritingInMilliseconds(3000));
-
-  // Now we should see the 0.5x buffer.
-  EXPECT_EQ(1250, TimestampSinceLastWritingInMilliseconds(3500));
-  EXPECT_EQ(1500, TimestampSinceLastWritingInMilliseconds(4000));
-
-  // Now we should see the 2.0x buffer.
-  EXPECT_EQ(2500, TimestampSinceLastWritingInMilliseconds(4500));
-  EXPECT_EQ(3500, TimestampSinceLastWritingInMilliseconds(5000));
-
-  // Times beyond the known length of the audio clock should return the last
-  // media timestamp we know of.
-  EXPECT_EQ(3500, TimestampSinceLastWritingInMilliseconds(5001));
-  EXPECT_EQ(3500, TimestampSinceLastWritingInMilliseconds(6000));
-}
-
 TEST_F(AudioClockTest, TimeUntilPlayback) {
   // Construct an audio clock with the following representation:
   //