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 5bf558bdb55eb59a54a0fdb1fa37d2ecc475dc43..0fc8db4a957691d1fc22e52627c21433d87e53db 100644
--- a/third_party/WebKit/public/web/WebFrameClient.h
+++ b/third_party/WebKit/public/web/WebFrameClient.h
@@ -438,6 +438,10 @@ 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.