Implementation of 'AudioContext.getOutputTimestamp' method

media/audio/audio_output_device.cc

Index: media/audio/audio_output_device.cc
diff --git a/media/audio/audio_output_device.cc b/media/audio/audio_output_device.cc
index e5e3513a413645ab5eee6fa6c446ae3a6eaeddf1..57fe6d494297f4b2a47d17db8532b41b3db9c8b8 100644
--- a/media/audio/audio_output_device.cc
+++ b/media/audio/audio_output_device.cc
@@ -39,7 +39,7 @@ class AudioOutputDevice::AudioThreadCallback
   void MapSharedMemory() override;
 
   // Called whenever we receive notifications about pending data.
-  void Process(uint32_t pending_data) override;
+  void Process(uint32_t pending_data, const AudioTimestamp& timestamp) override;
 
   // Returns whether the current thread is the audio device thread or not.
   // Will always return true if DCHECKs are not enabled.
@@ -458,7 +458,9 @@ void AudioOutputDevice::AudioThreadCallback::MapSharedMemory() {
 }
 
 // Called whenever we receive notifications about pending data.
-void AudioOutputDevice::AudioThreadCallback::Process(uint32_t pending_data) {
+void AudioOutputDevice::AudioThreadCallback::Process(
+    uint32_t pending_data,
+    const AudioTimestamp& timestamp) {
   // Convert the number of pending bytes in the render buffer into frames.
   double frames_delayed = static_cast<double>(pending_data) / bytes_per_frame_;
 
@@ -488,7 +490,7 @@ void AudioOutputDevice::AudioThreadCallback::Process(uint32_t pending_data) {
   // the shared memory the Render() call is writing directly into the shared
   // memory.
   render_callback_->Render(output_bus_.get(), std::round(frames_delayed),
-                           frames_skipped);
+                           frames_skipped, timestamp);
 }
 
 bool AudioOutputDevice::AudioThreadCallback::