Update the CHECK in 'NavigationHandleImpl::GetRenderFrameHost()'

content/browser/frame_host/navigation_handle_impl.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/navigation_handle_impl.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "content/browser/frame_host/frame_tree_node.h"
@@ skipping 165 matching lines @@
   CHECK_NE(INITIAL, state_)
       << "This accessor should not be called before the request is started.";
   return is_external_protocol_;
 }
 
 net::Error NavigationHandleImpl::GetNetErrorCode() {
   return net_error_code_;
 }
 
 RenderFrameHostImpl* NavigationHandleImpl::GetRenderFrameHost() {
-  CHECK(state_ >= READY_TO_COMMIT)
-      << "This accessor should only be called "
-         "after the navigation is ready to commit.";
+  // TODO(mkwst): Change this to check against 'READY_TO_COMMIT' once
+  // ReadyToCommitNavigation is available whether or not PlzNavigate is
+  // enabled. https://crbug.com/621856
+  CHECK_GE(state_, WILL_PROCESS_RESPONSE)
+      << "This accessor should only be called after a response has been "
+         "delivered for processing.";
   return render_frame_host_;
 }
 
 bool NavigationHandleImpl::IsSamePage() {
   DCHECK(state_ == DID_COMMIT || state_ == DID_COMMIT_ERROR_PAGE)
       << "This accessor should not be called before the navigation has "
          "committed.";
   return is_same_page_;
 }
 
@@ skipping 333 matching lines @@
   complete_callback_.Reset();
 
   if (!callback.is_null())
     callback.Run(result);
 
   // No code after running the callback, as it might have resulted in our
   // destruction.
 }
 
 }  // namespace content