DevTools: Implement console message logging through an extension

Source/devtools/front_end/sdk/CompilerScriptMapping.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 116 matching lines @@
             for (var i = 0; i < sourceURLs.length; ++i) {
                 var sourceURL = sourceURLs[i];
                 if (this._sourceMapForURL.get(sourceURL))
                     continue;
                 this._sourceMapForURL.put(sourceURL, sourceMap);
                 if (!this._workspace.hasMappingForURL(sourceURL) && !this._workspace.uiSourceCodeForURL(sourceURL)) {
                     var contentProvider = sourceMap.sourceContentProvider(sourceURL, WebInspector.resourceTypes.Script);
                     this._networkWorkspaceBinding.addFileForURL(sourceURL, contentProvider, script.isContentScript());
                 }
                 var uiSourceCode = this._workspace.uiSourceCodeForURL(sourceURL);
-                if (uiSourceCode)
+                if (uiSourceCode) {
                     this._bindUISourceCode(uiSourceCode);
-                else
-                    this._target.consoleModel.showErrorMessage(WebInspector.UIString("Failed to locate workspace file mapped to URL %s from source map %s", sourceURL, sourceMap.url()));
+                } else {
+                    // FIXME: Make use of this._target once we have more targets.
+                    WebInspector.messageSink.addErrorMessage(WebInspector.UIString("Failed to locate workspace file mapped to URL %s from source map %s", sourceURL, sourceMap.url()), true);
+                }
             }
             script.updateLocations();
         }
     },
 
     /**
      * @return {boolean}
      */
     isIdentity: function()
     {
@@ skipping 101 matching lines @@
 
         this._sourceMapForURL.keys().forEach(unbindUISourceCodeForURL.bind(this));
 
         this._sourceMapForSourceMapURL = {};
         this._pendingSourceMapLoadingCallbacks = {};
         this._sourceMapForScriptId = {};
         this._scriptForSourceMap.clear();
         this._sourceMapForURL.clear();
     }
 }