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

third_party/WebKit/public/web/WebFrameClient.h

Index: third_party/WebKit/public/web/WebFrameClient.h
diff --git a/third_party/WebKit/public/web/WebFrameClient.h b/third_party/WebKit/public/web/WebFrameClient.h
index 8c10ed89b098b371b39cdef7ed728402fbb7eaec..415efbfb2a2959b4142735f4bb30a8714d4fd8b8 100644
--- a/third_party/WebKit/public/web/WebFrameClient.h
+++ b/third_party/WebKit/public/web/WebFrameClient.h
@@ -214,6 +214,11 @@ class BLINK_EXPORT WebFrameClient {
     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*) {}