Add min/max values for AudioParams

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/webaudio/StereoPannerNode.h"
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "modules/webaudio/AbstractAudioContext.h"
@@ skipping 118 matching lines @@
     }
 
     if (m_newChannelCountMode != oldMode)
         context()->deferredTaskHandler().addChangedChannelCountMode(this);
 }
 
 // ----------------------------------------------------------------
 
 StereoPannerNode::StereoPannerNode(AbstractAudioContext& context, float sampleRate)
     : AudioNode(context)
-    , m_pan(AudioParam::create(context, ParamTypeStereoPannerPan, 0))
+    , m_pan(AudioParam::create(context, ParamTypeStereoPannerPan, 0, -1, 1))
 {
     setHandler(StereoPannerHandler::create(*this, sampleRate, m_pan->handler()));
 }
 
 StereoPannerNode* StereoPannerNode::create(AbstractAudioContext& context, float sampleRate)
 {
     return new StereoPannerNode(context, sampleRate);
 }
 
 DEFINE_TRACE(StereoPannerNode)
 {
     visitor->trace(m_pan);
     AudioNode::trace(visitor);
 }
 
 AudioParam* StereoPannerNode::pan() const
 {
     return m_pan;
 }
 
 } // namespace blink