Implement tail processing for AudioNodes

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

Index: third_party/WebKit/Source/platform/audio/HRTFPanner.cpp
diff --git a/third_party/WebKit/Source/platform/audio/HRTFPanner.cpp b/third_party/WebKit/Source/platform/audio/HRTFPanner.cpp
index 1e2f146a791afb339a49fd9058b89cdfcc886bac..0177f6834068e23aea21a7806c027f4482ee7954 100644
--- a/third_party/WebKit/Source/platform/audio/HRTFPanner.cpp
+++ b/third_party/WebKit/Source/platform/audio/HRTFPanner.cpp
@@ -350,6 +350,11 @@ void HRTFPanner::PanWithSampleAccurateValues(
       frames_to_process, channel_interpretation);
 }
 
+bool HRTFPanner::RequiresTailProcessing() const {
+  // Always return true since the tail and latency are never zero.
+  return true;
+}
+
 double HRTFPanner::TailTime() const {
   // Because HRTFPanner is implemented with a DelayKernel and a FFTConvolver,
   // the tailTime of the HRTFPanner is the sum of the tailTime of the