Revert of Require WebLocalFrame to be created with a non-null client

third_party/WebKit/Source/web/tests/FrameTestHelpers.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 192 matching lines @@
     UseMockScrollbarSettings m_mockScrollbarSettings;
     TestWebViewClient* m_testWebViewClient;
 };
 
 // Minimal implementation of WebFrameClient needed for unit tests that load frames. Tests that load
 // frames and need further specialization of WebFrameClient behavior should subclass this.
 class TestWebFrameClient : public WebFrameClient {
 public:
     TestWebFrameClient();
 
-    WebLocalFrame* createChildFrame(WebLocalFrame* parent, WebTreeScopeType, const WebString& name, const WebString& uniqueName, WebSandboxFlags, const WebFrameOwnerProperties&) override;
+    WebFrame* createChildFrame(WebLocalFrame* parent, WebTreeScopeType, const WebString& name, const WebString& uniqueName, WebSandboxFlags, const WebFrameOwnerProperties&) override;
+    void frameDetached(WebLocalFrame*, DetachType) override;
     void didStartLoading(bool) override;
     void didStopLoading() override;
 
     bool isLoading() { return m_loadsInProgress > 0; }
 
 private:
     int m_loadsInProgress = 0;
 };
 
 // Minimal implementation of WebRemoteFrameClient needed for unit tests that load remote frames. Tests that load
@@ skipping 13 matching lines @@
         WebDOMMessageEvent) override { }
 
 private:
     Persistent<WebRemoteFrameImpl> const m_frame;
 };
 
 } // namespace FrameTestHelpers
 } // namespace blink
 
 #endif // FrameTestHelpers_h