Do not set starting grow animation width if icon is not visible

It's possible for width to be non-zero while the icon is hidden. In
this case, we do want to grow the label starting from 0 width.

Change-Id: I80d6d216aef5f5ec8d849fd844ce21e38079f863
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1850966Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Kristi Park <kristipark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705208}

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

@@ -436,7 +436,7 @@ void IconLabelBubbleView::AnimateIn(base::Optional<int> string_id) {
   if (!label()->GetVisible()) {
     // Start animation from the current width, otherwise the icon will also be
     // included if visible.
-    grow_animation_starting_width_ = width();
+    grow_animation_starting_width_ = GetVisible() ? width() : 0;
     if (string_id) {
       base::string16 label = l10n_util::GetStringUTF16(string_id.value());
       SetLabel(label);