[DevTools] Remove WI.OverridesSupport.responsiveDesignAvailable.

Source/devtools/front_end/emulation/OverridesSupport.js

Index: Source/devtools/front_end/emulation/OverridesSupport.js
diff --git a/Source/devtools/front_end/emulation/OverridesSupport.js b/Source/devtools/front_end/emulation/OverridesSupport.js
index 895f45523b711b97b156c29dce284ca88b1d578f..43dafa4e733985a3e0e54a9de902aaa864443f5b 100644
--- a/Source/devtools/front_end/emulation/OverridesSupport.js
+++ b/Source/devtools/front_end/emulation/OverridesSupport.js
@@ -31,9 +31,8 @@
 /**
  * @constructor
  * @extends {WebInspector.Object}
- * @param {boolean} responsiveDesignAvailable
  */
-WebInspector.OverridesSupport = function(responsiveDesignAvailable)
+WebInspector.OverridesSupport = function()
 {
     this._touchEmulationSuspended = false;
     this._emulateMobileEnabled = false;
@@ -43,7 +42,6 @@ WebInspector.OverridesSupport = function(responsiveDesignAvailable)
     this._fixedDeviceScale = false;
     this._initialized = false;
     this._deviceMetricsThrottler = new WebInspector.Throttler(0);
-    this._responsiveDesignAvailable = responsiveDesignAvailable;
 
     this.settings = {};
     this.settings._emulationEnabled = WebInspector.settings.createSetting("emulationEnabled", false);
@@ -298,14 +296,6 @@ WebInspector.OverridesSupport.prototype = {
     },
 
     /**
-     * @return {boolean}
-     */
-    responsiveDesignAvailable: function()
-    {
-        return this._responsiveDesignAvailable;
-    },
-
-    /**
      * @param {!WebInspector.Target} target
      * @param {function()} callback
      */