DevTools: promisify ContentProvider.requestContent and all its clients.

third_party/WebKit/Source/devtools/front_end/sources/NavigatorView.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  * 1. Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *
@@ skipping 616 matching lines @@
         /**
          * @this {WebInspector.NavigatorView}
          * @param {?string} content
          */
         function contentLoaded(content)
         {
             createFile.call(this, content || "");
         }
 
         if (uiSourceCodeToCopy)
-            uiSourceCodeToCopy.requestContent(contentLoaded.bind(this));
+            uiSourceCodeToCopy.requestContent().then(contentLoaded.bind(this));
         else
             createFile.call(this);
 
         /**
          * @this {WebInspector.NavigatorView}
          * @param {string=} content
          */
         function createFile(content)
         {
             project.createFile(path, null, content || "", fileCreated.bind(this));
@@ skipping 210 matching lines @@
         this.listItemElement.draggable = true;
         this.listItemElement.addEventListener("click", this._onclick.bind(this), false);
         this.listItemElement.addEventListener("contextmenu", this._handleContextMenuEvent.bind(this), false);
         this.listItemElement.addEventListener("mousedown", this._onmousedown.bind(this), false);
         this.listItemElement.addEventListener("dragstart", this._ondragstart.bind(this), false);
     },
 
     _onmousedown: function(event)
     {
         if (event.which === 1) // Warm-up data for drag'n'drop
-            this._uiSourceCode.requestContent(callback.bind(this));
+            this._uiSourceCode.requestContent().then(callback.bind(this));
         /**
          * @param {?string} content
          * @this {WebInspector.NavigatorSourceTreeElement}
          */
         function callback(content)
         {
             this._warmedUpContent = content;
         }
     },
 
@@ skipping 612 matching lines @@
     {
         if (this._treeElement)
             return this._treeElement;
         this._treeElement = new WebInspector.NavigatorFolderTreeElement(this._navigatorView, this._type, this._title);
         this._treeElement.setNode(this);
         return this._treeElement;
     },
 
     __proto__: WebInspector.NavigatorTreeNode.prototype
 }