Exposing native doubles as doubles when they are read-only or method return values.

sdk/lib/web_audio/dartium/web_audio_dartium.dart

 library dart.dom.web_audio;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:_collection-dev' hide deprecated;
 import 'dart:html';
 import 'dart:html_common';
 import 'dart:nativewrappers';
 import 'dart:typed_data';
 // DO NOT EDIT
@@ skipping 74 matching lines @@
 
 
 @DocsEditable()
 @DomName('AudioBuffer')
 // https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#AudioBuffer-section
 @Experimental()
 class AudioBuffer extends NativeFieldWrapperClass1 {
 
   @DomName('AudioBuffer.duration')
   @DocsEditable()
-  num get duration native "AudioBuffer_duration_Getter";
+  double get duration native "AudioBuffer_duration_Getter";
 
   @DomName('AudioBuffer.gain')
   @DocsEditable()
   num get gain native "AudioBuffer_gain_Getter";
 
   @DomName('AudioBuffer.gain')
   @DocsEditable()
   void set gain(num value) native "AudioBuffer_gain_Setter";
 
   @DomName('AudioBuffer.length')
   @DocsEditable()
   int get length native "AudioBuffer_length_Getter";
 
   @DomName('AudioBuffer.numberOfChannels')
   @DocsEditable()
   int get numberOfChannels native "AudioBuffer_numberOfChannels_Getter";
 
   @DomName('AudioBuffer.sampleRate')
   @DocsEditable()
-  num get sampleRate native "AudioBuffer_sampleRate_Getter";
+  double get sampleRate native "AudioBuffer_sampleRate_Getter";
 
   @DomName('AudioBuffer.getChannelData')
   @DocsEditable()
   Float32List getChannelData(int channelIndex) native "AudioBuffer_getChannelData_Callback";
 
 }
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ skipping 143 matching lines @@
 
   /// Checks if this type is supported on the current platform.
   static bool get supported => true;
 
   @DomName('AudioContext.activeSourceCount')
   @DocsEditable()
   int get activeSourceCount native "AudioContext_activeSourceCount_Getter";
 
   @DomName('AudioContext.currentTime')
   @DocsEditable()
-  num get currentTime native "AudioContext_currentTime_Getter";
+  double get currentTime native "AudioContext_currentTime_Getter";
 
   @DomName('AudioContext.destination')
   @DocsEditable()
   AudioDestinationNode get destination native "AudioContext_destination_Getter";
 
   @DomName('AudioContext.listener')
   @DocsEditable()
   AudioListener get listener native "AudioContext_listener_Getter";
 
   @DomName('AudioContext.sampleRate')
   @DocsEditable()
-  num get sampleRate native "AudioContext_sampleRate_Getter";
+  double get sampleRate native "AudioContext_sampleRate_Getter";
 
   @DomName('AudioContext.createAnalyser')
   @DocsEditable()
   AnalyserNode createAnalyser() native "AudioContext_createAnalyser_Callback";
 
   @DomName('AudioContext.createBiquadFilter')
   @DocsEditable()
   BiquadFilterNode createBiquadFilter() native "AudioContext_createBiquadFilter_Callback";
 
   @DomName('AudioContext.createBuffer')
@@ skipping 307 matching lines @@
 
 
 @DocsEditable()
 @DomName('AudioParam')
 // https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#AudioParam
 @Experimental()
 class AudioParam extends NativeFieldWrapperClass1 {
 
   @DomName('AudioParam.defaultValue')
   @DocsEditable()
-  num get defaultValue native "AudioParam_defaultValue_Getter";
+  double get defaultValue native "AudioParam_defaultValue_Getter";
 
   @DomName('AudioParam.maxValue')
   @DocsEditable()
-  num get maxValue native "AudioParam_maxValue_Getter";
+  double get maxValue native "AudioParam_maxValue_Getter";
 
   @DomName('AudioParam.minValue')
   @DocsEditable()
-  num get minValue native "AudioParam_minValue_Getter";
+  double get minValue native "AudioParam_minValue_Getter";
 
   @DomName('AudioParam.name')
   @DocsEditable()
   String get name native "AudioParam_name_Getter";
 
   @DomName('AudioParam.units')
   @DocsEditable()
   int get units native "AudioParam_units_Getter";
 
   @DomName('AudioParam.value')
@@ skipping 718 matching lines @@
 // WARNING: Do not edit - generated code.
 
 
 @DocsEditable()
 @DomName('WaveTable')
 // https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#WaveTable-section
 @Experimental()
 class WaveTable extends NativeFieldWrapperClass1 {
 
 }