[DevTools] Send source map content from frontend to backend

third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.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:
  *
  *     * 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 70 matching lines @@
     this._reverseMappingsBySourceURL = new Map();
     this._mappings = [];
     this._sources = {};
     this._sourceContentByURL = {};
     this._parseMappingPayload(payload);
 }
 
 /**
  * @param {string} sourceMapURL
  * @param {string} compiledURL
- * @param {function(?WebInspector.SourceMap)} callback
+ * @param {function(?WebInspector.SourceMap, string=)} callback
  * @this {WebInspector.SourceMap}
  */
 WebInspector.SourceMap.load = function(sourceMapURL, compiledURL, callback)
 {
     WebInspector.multitargetNetworkManager.loadResource(sourceMapURL, contentLoaded);
 
     /**
      * @param {number} statusCode
      * @param {!Object.<string, string>} headers
      * @param {string} content
      */
     function contentLoaded(statusCode, headers, content)
     {
         if (!content || statusCode >= 400) {
             callback(null);
             return;
         }
 
         if (content.slice(0, 3) === ")]}")
             content = content.substring(content.indexOf('\n'));
         try {
             var payload = /** @type {!SourceMapV3} */ (JSON.parse(content));
             var baseURL = sourceMapURL.startsWith("data:") ? compiledURL : sourceMapURL;
-            callback(new WebInspector.SourceMap(compiledURL, baseURL, payload));
+            callback(new WebInspector.SourceMap(compiledURL, baseURL, payload), content);
         } catch(e) {
             console.error(e.message);
             WebInspector.console.error("Failed to parse SourceMap: " + sourceMapURL);
             callback(null);
         }
     }
 }
 
 WebInspector.SourceMap.prototype = {
     /**
@@ skipping 290 matching lines @@
  * @param {number=} sourceColumnNumber
  */
 WebInspector.SourceMap.Entry = function(lineNumber, columnNumber, sourceURL, sourceLineNumber, sourceColumnNumber)
 {
     this.lineNumber = lineNumber;
     this.columnNumber = columnNumber;
     this.sourceURL = sourceURL;
     this.sourceLineNumber = sourceLineNumber;
     this.sourceColumnNumber = sourceColumnNumber;
 }