Don't auto allow access to media devices unless a the security origin of the requester is the same …

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 d257922a49550cc8ff10345ecec470194e19a7c8..07ca139b09fe28d7704f336b56704d1320fb3da7 100644
--- a/content/browser/frame_host/frame_tree_node.h
+++ b/content/browser/frame_host/frame_tree_node.h
@@ -97,6 +97,10 @@ class CONTENT_EXPORT FrameTreeNode {
     replication_state_.sandbox_flags = sandbox_flags;
   }
 
+  bool HasSameOrigin(const FrameTreeNode& node) const {
+    return replication_state_.origin.IsSameAs(node.replication_state_.origin);
+  }
+
   const FrameReplicationState& current_replication_state() const {
     return replication_state_;
   }