Use FrameTreeNode ID as frameId in extension APIs

chrome/browser/extensions/api/web_navigation/web_navigation_api.cc

Index: chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
diff --git a/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc b/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
index 6597f0efa99cbb815f0874b0217a7be994406543..4b97d47050bb8919aea0d2f0a35e1efeb7f7ff94 100644
--- a/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
+++ b/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
@@ -488,7 +488,6 @@ bool WebNavigationGetFrameFunction::RunSync() {
   EXTENSION_FUNCTION_VALIDATE(params.get());
   int tab_id = params->details.tab_id;
   int frame_id = params->details.frame_id;
-  int process_id = params->details.process_id;
 
   SetResult(base::Value::CreateNullValue());
 
@@ -513,7 +512,7 @@ bool WebNavigationGetFrameFunction::RunSync() {
 
   content::RenderFrameHost* render_frame_host =
       frame_id == 0 ? web_contents->GetMainFrame()
-                    : content::RenderFrameHost::FromID(process_id, frame_id);
+                    : content::RenderFrameHost::FromFrameTreeNodeID(frame_id);
   if (!frame_navigation_state.IsValidFrame(render_frame_host))
     return true;