Show that ResizeLock is racey with renderer frames in flight.

content/browser/renderer_host/delegated_frame_host.cc

Index: content/browser/renderer_host/delegated_frame_host.cc
diff --git a/content/browser/renderer_host/delegated_frame_host.cc b/content/browser/renderer_host/delegated_frame_host.cc
index 1159f8bcc21eba6260b0f8163c6835c827362467..5f0de3e608155d6412f45125b99cce0f6eadef7f 100644
--- a/content/browser/renderer_host/delegated_frame_host.cc
+++ b/content/browser/renderer_host/delegated_frame_host.cc
@@ -92,13 +92,11 @@ void DelegatedFrameHost::MaybeCreateResizeLock() {
       can_lock_compositor_ == NO_PENDING_RENDERER_FRAME ||
       can_lock_compositor_ == NO_PENDING_COMMIT;
 
-  if (can_lock_compositor_ == YES_CAN_LOCK)
-    can_lock_compositor_ = YES_DID_LOCK;
-
   resize_lock_ = client_->DelegatedFrameHostCreateResizeLock();
   if (!defer_compositor_lock) {
     bool locked = resize_lock_->Lock();
     DCHECK(locked);
+    can_lock_compositor_ = YES_DID_LOCK;
   }
 }