Send origin updates to frame proxies when a frame navigates to new origin.

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 7e1add1231f694ef0e37f29fb9f34bafd24ee55b..bcb77802c47b008b92f31004ac31db9c5ba406d6 100644
--- a/content/browser/frame_host/frame_tree_node.h
+++ b/content/browser/frame_host/frame_tree_node.h
@@ -93,10 +93,10 @@ class CONTENT_EXPORT FrameTreeNode {
     current_url_ = url;
   }
 
-  void set_current_origin(const url::Origin& origin) {
-    replication_state_.origin = origin;
-  }
+  // Set the current origin and notify proxies about the update.
+  void SetCurrentOrigin(const url::Origin& origin);
 
+  // Set the current name and notify proxies about the update.
   void SetFrameName(const std::string& name);
 
   SandboxFlags effective_sandbox_flags() { return effective_sandbox_flags_; }