Revert 250823 "With --site-per-process, avoid a crash when a sub..."

trunk/src/content/browser/frame_host/frame_tree_node.cc

Index: trunk/src/content/browser/frame_host/frame_tree_node.cc
===================================================================
--- trunk/src/content/browser/frame_host/frame_tree_node.cc	(revision 251088)
+++ trunk/src/content/browser/frame_host/frame_tree_node.cc	(working copy)
@@ -72,13 +72,13 @@
   }
 }
 
-void FrameTreeNode::ResetForNewProcess() {
+void FrameTreeNode::ResetForMainFrameSwap() {
   frame_id_ = kInvalidFrameId;
   current_url_ = GURL();
 
   // The children may not have been cleared if a cross-process navigation
   // commits before the old process cleans everything up.  Make sure the child
-  // nodes get deleted before swapping to a new process.
+  // nodes get deleted.
   children_.clear();
 }