Only reset tab hover card mouse exit timestamp if the hover card is showing when exiting a tab.

Bug: 1013958
Change-Id: Ic653e7febf1161b23ed1ccc0e2f2b4fecc1f7817
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1880584
Commit-Queue: Caroline Rising <corising@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709960}

chrome/browser/ui/views/tabs/tab_hover_card_bubble_view.cc

@@ -449,6 +449,10 @@ void TabHoverCardBubbleView::UpdateAndShow(Tab* tab) {
   }
 }
 
+bool TabHoverCardBubbleView::IsVisible() {
+  return widget_->IsVisible();
+}
+
 void TabHoverCardBubbleView::FadeOutToHide() {
   delayed_show_timer_.Stop();
   RegisterToThumbnailImageUpdates(nullptr);

chrome/browser/ui/views/tabs/tab_hover_card_bubble_view.h

@@ -40,6 +40,8 @@ class TabHoverCardBubbleView : public views::BubbleDialogDelegateView,
 
   void UpdateAnchorBounds(gfx::Rect anchor_bounds);
 
+  bool IsVisible();
+
   void FadeOutToHide();
 
   bool IsFadingOut() const;

chrome/browser/ui/views/tabs/tab_strip.cc

@@ -3145,8 +3145,10 @@ void TabStrip::OnMouseEntered(const ui::MouseEvent& event) {
 }
 
 void TabStrip::OnMouseExited(const ui::MouseEvent& event) {
-  if (base::FeatureList::IsEnabled(features::kTabHoverCards) && hover_card_)
+  if (base::FeatureList::IsEnabled(features::kTabHoverCards) && hover_card_ &&
+      hover_card_->IsVisible()) {
     hover_card_->set_last_mouse_exit_timestamp(base::TimeTicks::Now());
+  }
   UpdateHoverCard(nullptr);
 }