NOT YET READY: Improve granularity of window namespaces in Blink.

third_party/WebKit/public/web/WebFrameClient.h

 /*
  * Copyright (C) 2011, 2012 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 196 matching lines @@
       WebLocalFrame* parent,
       WebTreeScopeType,
       const WebString& name,
       const WebString& fallback_name,
       WebSandboxFlags sandbox_flags,
       const WebParsedFeaturePolicy& container_policy,
       const WebFrameOwnerProperties&) {
     return nullptr;
   }
 
+  // Called when Blink cannot find a frame with the given name in the frame's
+  // browsing instance.  This gives the embedder a chance to return a frame
+  // from outside of the browsing instance.
+  virtual WebFrame* FindFrame(const WebString& name) { return nullptr; }
+
   // This frame has set its opener to another frame, or disowned the opener
   // if opener is null. See http://html.spec.whatwg.org/#dom-opener.
   virtual void DidChangeOpener(WebFrame*) {}
 
   // Specifies the reason for the detachment.
   enum class DetachType { kRemove, kSwap };
 
   // This frame has been detached. Embedders should release any resources
   // associated with this frame. If the DetachType is Remove, the frame should
   // also be removed from the frame tree; otherwise, if the DetachType is
@@ skipping 580 matching lines @@
   // Loading --------------------------------------------------------------
   virtual std::unique_ptr<blink::WebURLLoader> CreateURLLoader() {
     NOTREACHED();
     return nullptr;
   }
 };
 
 }  // namespace blink
 
 #endif