PlzNavigate: fix issue preventing navigations to WebUIs

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 1f4994a897206045d6692f65eb7604029bd71487..4c4abc1bc79bcb2702eb54db2fab70f411c66611 100644
--- a/content/browser/frame_host/navigation_request.h
+++ b/content/browser/frame_host/navigation_request.h
@@ -27,6 +27,7 @@ class NavigationData;
 class NavigatorDelegate;
 class ResourceRequestBody;
 class SiteInstanceImpl;
+class StoragePartition;
 class StreamHandle;
 struct NavigationRequestInfo;
 
@@ -161,6 +162,9 @@ class CONTENT_EXPORT NavigationRequest : public NavigationURLLoaderDelegate {
   void TransferNavigationHandleOwnership(
       RenderFrameHostImpl* render_frame_host);
 
+  // Returns the StoragePartition to use for this navigation.
+  StoragePartition* GetStoragePartitionForNavigation();
+
  private:
   NavigationRequest(FrameTreeNode* frame_tree_node,
                     const CommonNavigationParams& common_params,