LocationBarView: Add a CHECK to help debug a crash.

chrome/browser/ui/views/location_bar/location_bar_view.cc

Index: chrome/browser/ui/views/location_bar/location_bar_view.cc
diff --git a/chrome/browser/ui/views/location_bar/location_bar_view.cc b/chrome/browser/ui/views/location_bar/location_bar_view.cc
index 993e9ac03cac78159bded1d7478b6386cff38ea9..e0c2d6b7425c211d09804357c7fba5c639953d2e 100644
--- a/chrome/browser/ui/views/location_bar/location_bar_view.cc
+++ b/chrome/browser/ui/views/location_bar/location_bar_view.cc
@@ -471,6 +471,9 @@ void LocationBarView::Layout() {
   if (!location_entry_.get())
     return;
 
+  // TODO(jhawkins): Remove once crbug.com/101994 is fixed.
+  CHECK(location_icon_view_);
+
   // TODO(sky): baseline layout.
   int location_y = kVerticalEdgeThickness;
   // In some cases (e.g. fullscreen mode) we may have 0 height.  We still want