Add constructors for WebAudio nodes

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

Index: third_party/WebKit/Source/modules/webaudio/DynamicsCompressorOptions.idl
diff --git a/ash/public/interfaces/ash_window_type.mojom b/third_party/WebKit/Source/modules/webaudio/DynamicsCompressorOptions.idl
similarity index 52%
copy from ash/public/interfaces/ash_window_type.mojom
copy to third_party/WebKit/Source/modules/webaudio/DynamicsCompressorOptions.idl
index 61f2c4d6435fb90668777035bb9cdeeb3fa4c3b7..cefcbfbc9575807699ac839b1794536b44e4dedf 100644
--- a/ash/public/interfaces/ash_window_type.mojom
+++ b/third_party/WebKit/Source/modules/webaudio/DynamicsCompressorOptions.idl
@@ -2,12 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-module ash.mojom;
-
-enum AshWindowType {
-  SHELF = 0,
-  STATUS_AREA,
-  COUNT
-};
-
-const string kAshWindowType_Property = "ash:window-type";
+dictionary DynamicsCompressorOptions : AudioNodeOptions {
+    float attack;
+    float knee;
+    float ratio;
+    float release;
+    float threshold;
+};