Add constructors for WebAudio nodes

third_party/WebKit/Source/modules/webaudio/BiquadFilterOptions.idl

Index: third_party/WebKit/Source/modules/webaudio/BiquadFilterOptions.idl
diff --git a/blimp/common/switches.cc b/third_party/WebKit/Source/modules/webaudio/BiquadFilterOptions.idl
similarity index 52%
copy from blimp/common/switches.cc
copy to third_party/WebKit/Source/modules/webaudio/BiquadFilterOptions.idl
index 0d74d4461c46548bbf67029a6fc0549226de71bf..ead9e8a6d683c029da9f818c05ffa0c1f22f250f 100644
--- a/blimp/common/switches.cc
+++ b/third_party/WebKit/Source/modules/webaudio/BiquadFilterOptions.idl
@@ -2,10 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "blimp/common/switches.h"
-
-namespace blimp {
-
-const char kClientAuthTokenPath[] = "blimp-client-token-path";
-
-}  // namespace blimp
+dictionary BiquadFilterOptions : AudioNodeOptions {
+    BiquadFilterType type;
+    float Q;
+    float detune;
+    float frequency;
+    float gain;
+};