DevTools: Fix all outstanding JavaScript style issues.

third_party/WebKit/Source/devtools/front_end/sources/SourceMapNamesResolver.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 WebInspector.SourceMapNamesResolver = {};
 
 WebInspector.SourceMapNamesResolver._cachedMapSymbol = Symbol("cache");
 WebInspector.SourceMapNamesResolver._cachedIdentifiersSymbol = Symbol("cachedIdentifiers");
 
 /**
@@ skipping 669 matching lines @@
 }
 
 /**
  * @return {!WebInspector.SourceMapNamesResolverWorker}
  */
 WebInspector.SourceMapNamesResolverWorker._instance = function()
 {
     if (!WebInspector.SourceMapNamesResolverWorker._instanceObject)
         WebInspector.SourceMapNamesResolverWorker._instanceObject = new WebInspector.SourceMapNamesResolverWorker();
     return WebInspector.SourceMapNamesResolverWorker._instanceObject;
-}
+}