PlzNavigate: Move navigation-level mixed content checks to the browser.

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index e1e5f6f41ff53e441a2ddafbdd05bb8eb3576e1e..fe4398f64dc9ef2094651e4a91fa0385bb6be6d0 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -875,6 +875,10 @@ class CONTENT_EXPORT RenderFrameImpl
   void OnSetHasReceivedUserGesture();
   void OnFileChooserResponse(
       const std::vector<content::FileChooserFileInfo>& files);
+  void OnMixedContentUpdate(const std::set<int>& features,
+                            bool mixed_content_was_found,
+                            const GURL& mixed_content_url,
+                            bool mixed_content_had_redirect);
 #if defined(OS_ANDROID)
   void OnActivateNearestFindResult(int request_id, float x, float y);
   void OnGetNearestFindResult(int request_id, float x, float y);