Remove old session history logic.

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 6be34a6c69c289ae1c6f054bb9fd8cf7de09bd89..aee77f9f602d32f525a49d1b345bb531abfdc365 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -769,7 +769,6 @@ bool RenderViewHostImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowWidget, OnShowWidget)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowFullscreenWidget,
                         OnShowFullscreenWidget)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateState, OnUpdateState)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateTargetURL, OnUpdateTargetURL)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Close, OnClose)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RequestMove, OnRequestMove)
@@ -833,20 +832,6 @@ void RenderViewHostImpl::OnRenderProcessGone(int status, int exit_code) {
   // decoupled.
 }
 
-void RenderViewHostImpl::OnUpdateState(const PageState& state) {
-  // Without this check, the renderer can trick the browser into using
-  // filenames it can't access in a future session restore.
-  auto* policy = ChildProcessSecurityPolicyImpl::GetInstance();
-  int child_id = GetProcess()->GetID();
-  if (!policy->CanReadAllFiles(child_id, state.GetReferencedFiles())) {
-    bad_message::ReceivedBadMessage(
-        GetProcess(), bad_message::RVH_CAN_ACCESS_FILES_OF_PAGE_STATE);
-    return;
-  }
-
-  delegate_->UpdateState(this, state);
-}
-
 void RenderViewHostImpl::OnUpdateTargetURL(const GURL& url) {
   if (is_active_)
     delegate_->UpdateTargetURL(this, url);