PlzNavigate: stop navigations when opening a document for write

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 939af5ab97c228d982c6a55608006f9a95b1d8d8..cb181b59c14dbc1336ff75ddf459bdfea5943276 100644
--- a/third_party/WebKit/public/web/WebFrameClient.h
+++ b/third_party/WebKit/public/web/WebFrameClient.h
@@ -450,6 +450,10 @@ class BLINK_EXPORT WebFrameClient {
     return WebEffectiveConnectionType::TypeUnknown;
   }
 
+  // PlzNavigate
+  // Called to abort a navigation that is being handled by the browser process.
+  virtual void abortClientNavigation() {}
+
   // Push API ---------------------------------------------------
 
   // Used to access the embedder for the Push API.