Make the embedder responsible for creating the WebFrame

public/web/WebFrameClient.h

Index: public/web/WebFrameClient.h
diff --git a/public/web/WebFrameClient.h b/public/web/WebFrameClient.h
index 5e21a0423a37b028824bc5d4a2efeed023590e3b..e536748a753285d40bf316a2e7e3642c4aeca2db 100644
--- a/public/web/WebFrameClient.h
+++ b/public/web/WebFrameClient.h
@@ -107,9 +107,10 @@ public:
     virtual void didAccessInitialDocument(WebFrame*) { }
 
     // A child frame was created in this frame. This is called when the frame
-    // is created and initialized.
-    virtual void didCreateFrame(WebFrame* parent, WebFrame* child) { }
-
+    // is created and initialized. Takes the name of the new frame, the parent
+    // frame and returns a new WebFrame. The WebFrame is valid until
+    // frameDetached() is called on it.
+    virtual WebFrame* createChildFrame(WebFrame* parent, const WebString& frameName) { return 0; }
     // This frame set its opener to null, disowning it.
     // See http://html.spec.whatwg.org/#dom-opener.
     virtual void didDisownOpener(WebFrame*) { }