DevTools: reformat front-end code to match chromium style.

third_party/WebKit/Source/devtools/front_end/extensions/ExtensionRegistryStub.js

Index: third_party/WebKit/Source/devtools/front_end/extensions/ExtensionRegistryStub.js
diff --git a/third_party/WebKit/Source/devtools/front_end/extensions/ExtensionRegistryStub.js b/third_party/WebKit/Source/devtools/front_end/extensions/ExtensionRegistryStub.js
index 7e31b83cfe6a4a0b12dd14ed047557b62b4d24a6..5765bbe7ccad190178b91c661ba86c6af2cfd291 100644
--- a/third_party/WebKit/Source/devtools/front_end/extensions/ExtensionRegistryStub.js
+++ b/third_party/WebKit/Source/devtools/front_end/extensions/ExtensionRegistryStub.js
@@ -27,16 +27,14 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-
 if (!window.InspectorExtensionRegistry) {
-    /**
-     * @constructor
-     */
-    WebInspector.InspectorExtensionRegistryStub = function() { };
-
-    WebInspector.InspectorExtensionRegistryStub.prototype = {
-        getExtensionsAsync: function() { }
-    };
+  /**
+   * @unrestricted
+   */
+  WebInspector.InspectorExtensionRegistryStub = class {
+    getExtensionsAsync() {
+    }
+  };
 
-    var InspectorExtensionRegistry = new WebInspector.InspectorExtensionRegistryStub();
+  var InspectorExtensionRegistry = new WebInspector.InspectorExtensionRegistryStub();
 }