Remove a bunch of pointless null checks in FrameLoaderClientImpl.

third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.h

Index: third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.h
diff --git a/third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.h b/third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.h
index 0d7db6f9ef8dfa34eaadc6988d51183285687bfa..d1098c7d20f8c76a39a6edd5213685eb32c1b78b 100644
--- a/third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.h
+++ b/third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.h
@@ -130,9 +130,8 @@ class WebEmbeddedWorkerImpl final : public WebEmbeddedWorker,
   Persistent<WorkerInspectorProxy> m_workerInspectorProxy;
 
   // 'shadow page' - created to proxy loading requests from the worker.
-  // Both WebView and WebFrame objects are close()'ed (where they're
-  // deref'ed) when this EmbeddedWorkerImpl is destructed, therefore they
-  // are guaranteed to exist while this object is around.
+  // WebView is guarantee to be exist while this object exists, as close() is
+  // called in the destructor.
   WebView* m_webView;
   Persistent<WebLocalFrameImpl> m_mainFrame;