PlzNavigate: Updated navigation cancel policy for renderer-initiated requests.

content/browser/frame_host/navigation_request.h

Index: content/browser/frame_host/navigation_request.h
diff --git a/content/browser/frame_host/navigation_request.h b/content/browser/frame_host/navigation_request.h
index b49d6929d1b9958e313d309f12777f2fb4f83b7e..948dbd1de14c8f64bd58ada794b97c2fc00e871e 100644
--- a/content/browser/frame_host/navigation_request.h
+++ b/content/browser/frame_host/navigation_request.h
@@ -78,6 +78,8 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
 
   const CommonNavigationParams& common_params() const { return common_params_; }
 
+  const BeginNavigationParams& begin_params() const { return begin_params_; }
+
   const CommitNavigationParams& commit_params() const { return commit_params_; }
 
   NavigationURLLoader* loader_for_testing() const { return loader_.get(); }