AudioParams with automations must process timelines

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

Index: third_party/WebKit/Source/modules/webaudio/BiquadFilterNode.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/BiquadFilterNode.cpp b/third_party/WebKit/Source/modules/webaudio/BiquadFilterNode.cpp
index 8cf237779d6123c6908d51eb4b62388e8cf231ca..b7a09bbd6115fdad197c186e0d85b3476d723b50 100644
--- a/third_party/WebKit/Source/modules/webaudio/BiquadFilterNode.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/BiquadFilterNode.cpp
@@ -51,6 +51,9 @@ BiquadFilterNode::BiquadFilterNode(BaseAudioContext& context)
   // Explicitly set the filter type so that any histograms get updated with the
   // default value.  Otherwise, the histogram won't ever show it.
   setType("lowpass");
+
+  // Initialize the handler so that AudioParams can be processed.
+  handler().initialize();
 }
 
 BiquadFilterNode* BiquadFilterNode::create(BaseAudioContext& context,