Plumb document's strict mixed content checking for RemoteFrames

content/browser/frame_host/frame_tree_node.h

Index: content/browser/frame_host/frame_tree_node.h
diff --git a/content/browser/frame_host/frame_tree_node.h b/content/browser/frame_host/frame_tree_node.h
index d678c9a53903e24403b6dbbf84c81ab9a125aa8a..7bb9f71f4dc245c03068185599f512f53012e990 100644
--- a/content/browser/frame_host/frame_tree_node.h
+++ b/content/browser/frame_host/frame_tree_node.h
@@ -137,6 +137,10 @@ class CONTENT_EXPORT FrameTreeNode {
   // Set the current name and notify proxies about the update.
   void SetFrameName(const std::string& name);
 
+  // Sets the current enforcement of strict mixed content checking and
+  // notifies proxies about the update.
+  void SetEnforceStrictMixedContentChecking(bool should_enforce);
+
   blink::WebSandboxFlags effective_sandbox_flags() {
     return effective_sandbox_flags_;
   }