Implementation of 'AudioContext.getOutputTimestamp' method

media/audio/audio_device_thread.cc

Index: media/audio/audio_device_thread.cc
diff --git a/media/audio/audio_device_thread.cc b/media/audio/audio_device_thread.cc
index 20874599e68f5f7cfddeff0022291e64aa718b6c..7074b2174a8497fd19dea5aa0c9af2cd8bccee86 100644
--- a/media/audio/audio_device_thread.cc
+++ b/media/audio/audio_device_thread.cc
@@ -175,6 +175,11 @@ void AudioDeviceThread::Thread::Run() {
     if (bytes_read != sizeof(pending_data))
       break;
 
+    AudioTimestamp output_timestamp = {0, 0};
+    bytes_read = socket_.Receive(&output_timestamp, sizeof(output_timestamp));
+    if (bytes_read != sizeof(output_timestamp))
+      break;
+
     // std::numeric_limits<uint32_t>::max() is a special signal which is
     // returned after the browser stops the output device in response to a
     // renderer side request.
@@ -186,7 +191,7 @@ void AudioDeviceThread::Thread::Run() {
     if (pending_data != std::numeric_limits<uint32_t>::max()) {
       base::AutoLock auto_lock(callback_lock_);
       if (callback_)
-        callback_->Process(pending_data);
+        callback_->Process(pending_data, output_timestamp);
     }
 
     // The usage of |synchronized_buffers_| differs between input and output