Add histograms for Biquad lowpass and highpass Q values

third_party/WebKit/Source/modules/webaudio/AudioParam.h

Index: third_party/WebKit/Source/modules/webaudio/AudioParam.h
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioParam.h b/third_party/WebKit/Source/modules/webaudio/AudioParam.h
index 42bffe793b960d2e3a94a66092b39c76a47f341a..e8f4999a9bf9cc55933aaf8521a8a9e43b1aaa45 100644
--- a/third_party/WebKit/Source/modules/webaudio/AudioParam.h
+++ b/third_party/WebKit/Source/modules/webaudio/AudioParam.h
@@ -51,6 +51,8 @@ enum AudioParamType {
     ParamTypeAudioBufferSourceDetune,
     ParamTypeBiquadFilterFrequency,
     ParamTypeBiquadFilterQ,
+    ParamTypeBiquadFilterQLowpass,
+    ParamTypeBiquadFilterQHighpass,
     ParamTypeBiquadFilterGain,
     ParamTypeBiquadFilterDetune,
     ParamTypeDelayDelayTime,
@@ -75,6 +77,7 @@ enum AudioParamType {
 class AudioParamHandler final : public ThreadSafeRefCounted<AudioParamHandler>, public AudioSummingJunction {
 public:
     AudioParamType getParamType() const { return m_paramType; }
+    void setParamType(AudioParamType);
     // Return a nice name for the AudioParam.
     String getParamName() const;
 
@@ -127,6 +130,10 @@ public:
     void disconnect(AudioNodeOutput&);
 
     float intrinsicValue() const { return noBarrierLoad(&m_intrinsicValue); }
+
+    // Update any histograms with the given value.
+    void updateHistograms(float newValue);
+
 private:
     AudioParamHandler(AbstractAudioContext& context, AudioParamType paramType, double defaultValue)
         : AudioSummingJunction(context.deferredTaskHandler())
@@ -172,6 +179,7 @@ public:
     AbstractAudioContext* context() const { return m_context; }
 
     AudioParamType getParamType() const { return handler().getParamType(); }
+    void setParamType(AudioParamType);
     String getParamName() const;
 
     float value() const;