Remove method ComputeQHistogramValue()

The corresponding histograms were removed, but we forgot to remove
this bit of code.  Remove it.

Bug: 946853, 774526
Change-Id: Idfaf4f44083e97bb0082ada7f215ff3efb79a642
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1542671Reviewed-by: Hongchan Choi <hongchan@chromium.org>
Commit-Queue: Raymond Toy <rtoy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#646587}

third_party/blink/renderer/modules/webaudio/audio_param.cc

@@ -305,14 +305,6 @@ void AudioParamHandler::CalculateTimelineValues(float* values,
       sample_rate, sample_rate, MinValue(), MaxValue()));
 }
 
-int AudioParamHandler::ComputeQHistogramValue(float new_value) const {
-  // For the Q value, assume a useful range is [0, 25] and that 0.25 dB
-  // resolution is good enough.  Then, we can map the floating point Q value (in
-  // dB) to an integer just by multipling by 4 and rounding.
-  new_value = clampTo(new_value, 0.0, 25.0);
-  return static_cast<int>(4 * new_value + 0.5);
-}
-
 // ----------------------------------------------------------------
 
 AudioParam::AudioParam(BaseAudioContext& context,

third_party/blink/renderer/modules/webaudio/audio_param.h

@@ -216,8 +216,6 @@ class AudioParamHandler final : public ThreadSafeRefCounted<AudioParamHandler>,
                             bool sample_accurate);
   void CalculateTimelineValues(float* values, unsigned number_of_values);
 
-  int ComputeQHistogramValue(float) const;
-
   // The type of AudioParam, indicating what this AudioParam represents and what
   // node it belongs to.  Mostly for informational purposes and doesn't affect
   // implementation.