DevTools: promisify ContentProvider.requestContent and all its clients.

third_party/WebKit/Source/devtools/front_end/source_frame/SourceFrame.js

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 109 matching lines @@
 
     get textEditor()
     {
         return this._textEditor;
     },
 
     _ensureContentLoaded: function()
     {
         if (!this._contentRequested) {
             this._contentRequested = true;
-            this._contentProvider.requestContent(this.setContent.bind(this));
+            this._contentProvider.requestContent().then(this.setContent.bind(this));
         }
     },
 
     /**
      * @param {number} line 0-based
      * @param {number=} column
      * @param {boolean=} shouldHighlight
      */
     revealPosition: function(line, column, shouldHighlight)
     {
@@ skipping 537 matching lines @@
     /**
      * @override
      * @param {?WebInspector.TextRange} from
      * @param {?WebInspector.TextRange} to
      */
     onJumpToPosition: function(from, to)
     {
         this._sourceFrame.onJumpToPosition(from, to);
     }
 }