DevTools: Implement console message logging through an extension

Source/devtools/front_end/sdk/CompilerScriptMapping.js

Index: Source/devtools/front_end/sdk/CompilerScriptMapping.js
diff --git a/Source/devtools/front_end/sdk/CompilerScriptMapping.js b/Source/devtools/front_end/sdk/CompilerScriptMapping.js
index 141cf63b90c5814e921f90945b0453f1908cc696..47432498911831f4b8d0637d3f1c0d37e82323e6 100644
--- a/Source/devtools/front_end/sdk/CompilerScriptMapping.js
+++ b/Source/devtools/front_end/sdk/CompilerScriptMapping.js
@@ -134,10 +134,12 @@ WebInspector.CompilerScriptMapping.prototype = {
                     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();
         }