Revert of Revert of DevTools: allow storing devtools preferences on the browser side. [blink]

Source/devtools/front_end/devtools_app/InspectorFrontendHostImpl.js

 // 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.
 
 /**
  * @constructor
  * @implements {InspectorFrontendHostAPI}
  */
 WebInspector.InspectorFrontendHostImpl = function()
 {
@@ skipping 86 matching lines @@
      * @param {number} streamId
      * @param {function(!InspectorFrontendHostAPI.LoadNetworkResourceResult)} callback
      */
     loadNetworkResource: function(url, headers, streamId, callback)
     {
         DevToolsAPI.sendMessageToEmbedder("loadNetworkResource", [url, headers, streamId], /** @type {function(?Object)} */ (callback));
     },
 
     /**
      * @override
+     * @param {function(!Object<string, string>)} callback
+     */
+    getPreferences: function(callback)
+    {
+        DevToolsAPI.sendMessageToEmbedder("getPreferences", [], /** @type {function(?Object)} */ (callback));
+    },
+
+    /**
+     * @override
+     * @param {string} name
+     * @param {string} value
+     */
+    setPreference: function(name, value)
+    {
+        DevToolsAPI.sendMessageToEmbedder("setPreference", [name, value], null);
+    },
+
+    /**
+     * @override
+     * @param {string} name
+     */
+    removePreference: function(name)
+    {
+        DevToolsAPI.sendMessageToEmbedder("removePreference", [name], null);
+    },
+
+    /**
+     * @override
+     */
+    clearPreferences: function()
+    {
+        DevToolsAPI.sendMessageToEmbedder("clearPreferences", [], null);
+    },
+
+    /**
+     * @override
      * @param {string} origin
      * @param {string} script
      */
     setInjectedScriptForOrigin: function(origin, script)
     {
         DevToolsHost.setInjectedScriptForOrigin(origin, script);
     },
 
     /**
      * @override
@@ skipping 334 matching lines @@
 
     /**
      * Support for legacy front-ends (<M44).
      * @param {number} panelCode
      */
     recordPanelShown: function(panelCode)
     {
         this.recordEnumeratedHistogram("DevTools.PanelShown", panelCode, 20);
     }
 }