Fix an issue that external protocol in subframes are not handled on Android

android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h

Index: android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h
diff --git a/android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h b/android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h
index 3add2032afa3e0ec940e38159db89480c4309e12..505e004feca9641c8a0005997c007d9543647866 100644
--- a/android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h
+++ b/android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h
@@ -49,7 +49,10 @@ class AwResourceDispatcherHostDelegate
       net::URLRequest* request) override;
   bool HandleExternalProtocol(const GURL& url,
                               int child_id,
-                              int route_id) override;
+                              int route_id,
+                              bool is_main_frame,
+                              ui::PageTransition page_transition,
+                              bool has_user_gesture) override;
   void OnResponseStarted(net::URLRequest* request,
                          content::ResourceContext* resource_context,
                          content::ResourceResponse* response,