Support AudioContextOptions latencyHint as double.

content/renderer/media/audio_renderer_mixer_manager_unittest.cc

 // Copyright (c) 2012 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/renderer/media/audio_renderer_mixer_manager.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "build/build_config.h"
@@ skipping 608 matching lines @@
 #if defined(OS_CHROMEOS)
   // Expecting input sample rate
   EXPECT_EQ(32000, mixer->GetOutputParamsForTesting().sample_rate());
   // Round up 20 ms (640) to the power of 2.
   EXPECT_EQ(1024, mixer->GetOutputParamsForTesting().frames_per_buffer());
 
 #else
   // Expecting hardware sample rate
   EXPECT_EQ(44100, mixer->GetOutputParamsForTesting().sample_rate());
 
-// 20 ms at 44100 is 882 frames per buffer.
-#if defined(OS_WIN)
+  // 20 ms at 44100 is 882 frames per buffer.
   // Round up 882 to the nearest multiple of the output buffer size (128). which
   // is 7 * 128 = 896
   EXPECT_EQ(896, mixer->GetOutputParamsForTesting().frames_per_buffer());
-#else
-  // Round up 882 to the power of 2.
-  EXPECT_EQ(1024, mixer->GetOutputParamsForTesting().frames_per_buffer());
-#endif  // defined(OS_WIN)
-
 #endif  // defined(OS_CHROMEOS)
 
   ReturnMixer(mixer);
 }
 
 // Verify output bufer size of the mixer is correctly adjusted for Playback
 // latency when the device buffer size exceeds 20 ms.
 TEST_F(AudioRendererMixerManagerTest,
        MixerParamsLatencyPlaybackLargeDeviceBufferSize) {
   mock_sink_ = new media::MockAudioRendererSink(
@@ skipping 43 matching lines @@
   media::AudioParameters params(AudioParameters::AUDIO_PCM_LINEAR,
                                 kChannelLayout, 32000, kBitsPerChannel, 512);
 
   media::AudioRendererMixer* mixer =
       GetMixer(kRenderFrameId, params, AudioLatency::LATENCY_PLAYBACK,
                kDefaultDeviceId, kSecurityOrigin, nullptr);
 
   // Expecting input sample rate
   EXPECT_EQ(32000, mixer->GetOutputParamsForTesting().sample_rate());
 
-// 20 ms at 32000 is 640 frames per buffer.
-#if defined(OS_WIN)
+  // 20 ms at 32000 is 640 frames per buffer.
   // Use 20 ms buffer.
   EXPECT_EQ(640, mixer->GetOutputParamsForTesting().frames_per_buffer());
-#else
-  // Ignore device buffer size, round up 640 to the power of 2.
-  EXPECT_EQ(1024, mixer->GetOutputParamsForTesting().frames_per_buffer());
-#endif  // defined(OS_WIN)
 
   ReturnMixer(mixer);
 }
 
 // Verify output bufer size of the mixer is correctly adjusted for RTC latency.
 TEST_F(AudioRendererMixerManagerTest, MixerParamsLatencyRtc) {
   // Expecting hardware buffer size of 128 frames
   EXPECT_EQ(44100,
             mock_sink_->GetOutputDeviceInfo().output_params().sample_rate());
   // Expecting hardware buffer size of 128 frames
@@ skipping 102 matching lines @@
   EXPECT_EQ(2048, mixer->GetOutputParamsForTesting().frames_per_buffer());
 #else
   // Expect hardware buffer size.
   EXPECT_EQ(128, mixer->GetOutputParamsForTesting().frames_per_buffer());
 #endif
 
   ReturnMixer(mixer);
 }
 
 }  // namespace content