Implementation of 'AudioContext.getOutputTimestamp' method

third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.cpp

Index: third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.cpp b/third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.cpp
index 73236e1d13c098e2245f3a488ed36da6b5e918ad..0ef4bc8273423e3443c0fb7b466cd110271c7121 100644
--- a/third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.cpp
@@ -690,7 +690,7 @@ void AbstractAudioContext::handleStoppableSourceNodes()
     }
 }
 
-void AbstractAudioContext::handlePreRenderTasks()
+void AbstractAudioContext::handlePreRenderTasks(const WebAudioTimestamp& outputTimestamp)
 {
     ASSERT(isAudioThread());
 
@@ -707,6 +707,9 @@ void AbstractAudioContext::handlePreRenderTasks()
         // Update the dirty state of the listener.
         listener()->updateState();
 
+        // Update output timestamp.
+        m_outputTimestamp = outputTimestamp;
+
         unlock();
     }
 }
@@ -773,6 +776,12 @@ void AbstractAudioContext::rejectPendingDecodeAudioDataResolvers()
     m_decodeAudioResolvers.clear();
 }
 
+WebAudioTimestamp AbstractAudioContext::outputTimestamp()
+{
+    AutoLocker locker(this);
+    return m_outputTimestamp;
+}
+
 void AbstractAudioContext::rejectPendingResolvers()
 {
     ASSERT(isMainThread());