[Paint Preview] Check if RFH is live

Add additional checks to make sure RFH is alive.

Change-Id: I83fee50ebb88f342dfca8b8f4bb37f3a4f73901a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2533521
Auto-Submit: Calder Kitagawa <ckitagawa@chromium.org>
Reviewed-by: Mehran Mahmoudi <mahmoudi@chromium.org>
Commit-Queue: Mehran Mahmoudi <mahmoudi@chromium.org>
Commit-Queue: Calder Kitagawa <ckitagawa@chromium.org>
Cr-Commit-Position: refs/heads/master@{#826537}

chrome/browser/paint_preview/services/paint_preview_tab_service.cc

@@ -251,12 +251,14 @@ void PaintPreviewTabService::CaptureTabInternal(
       content::WebContents::FromFrameTreeNodeId(frame_tree_node_id);
   auto* rfh = content::RenderFrameHost::FromID(frame_routing_id);
   if (!contents || !rfh || contents->IsBeingDestroyed() ||
-      contents->GetMainFrame() != rfh || !rfh->IsCurrent()) {
+      contents->GetMainFrame() != rfh || !rfh->IsCurrent() ||
+      !rfh->IsRenderFrameCreated() || !rfh->IsRenderFrameLive()) {
     std::move(callback).Run(Status::kWebContentsGone);
     return;
   }
   CapturePaintPreview(
-      contents, file_path.value(), gfx::Rect(), true, kMaxPerCaptureSizeBytes,
+      contents, rfh, file_path.value(), gfx::Rect(), true,
+      kMaxPerCaptureSizeBytes,
       base::BindOnce(&PaintPreviewTabService::OnCaptured,
                      weak_ptr_factory_.GetWeakPtr(), tab_id, key,
                      frame_tree_node_id, std::move(callback)));