Implement tail processing for AudioNodes

third_party/WebKit/Source/platform/audio/AudioDelayDSPKernel.cpp

Index: third_party/WebKit/Source/platform/audio/AudioDelayDSPKernel.cpp
diff --git a/third_party/WebKit/Source/platform/audio/AudioDelayDSPKernel.cpp b/third_party/WebKit/Source/platform/audio/AudioDelayDSPKernel.cpp
index 91f3d44ca73a1e31bd137cae26bb8b84d2fe8e05..c2793bd292644c19026bf7caf5bafd0915bbd0a2 100644
--- a/third_party/WebKit/Source/platform/audio/AudioDelayDSPKernel.cpp
+++ b/third_party/WebKit/Source/platform/audio/AudioDelayDSPKernel.cpp
@@ -163,6 +163,12 @@ void AudioDelayDSPKernel::Reset() {
   buffer_.Zero();
 }
 
+bool AudioDelayDSPKernel::RequiresTailProcessing() const {
+  // Always return true even if the tail time and latency might both
+  // be zero.
+  return true;
+}
+
 double AudioDelayDSPKernel::TailTime() const {
   // Account for worst case delay.
   // Don't try to track actual delay time which can change dynamically.