[DevTools] Typed events and event listeners.

third_party/WebKit/Source/devtools/front_end/common/module.json

 {
     "dependencies": [
         "platform"
     ],
     "scripts": [
         "Worker.js",
         "TextDictionary.js",
         "Object.js",
+        "ObjectBase.js",
         "Color.js",
         "Geometry.js",
         "Console.js",
         "ContentProvider.js",
         "CSSShadowModel.js",
         "ParsedURL.js",
         "Progress.js",
         "ResourceType.js",
         "Settings.js",
         "StaticContentProvider.js",
         "OutputStream.js",
         "SegmentedRange.js",
         "Text.js",
         "TextRange.js",
         "TextUtils.js",
         "Throttler.js",
         "Trie.js",
         "UIString.js",
         "ModuleExtensionInterfaces.js",
         "FormatterWorkerPool.js",
         "CharacterIdMap.js"
     ]
 }