[AF] Deselect current row if mouse leaves the dropdown

Bug: 861996
Change-Id: Ie3d579b3d59ba230ceec5229b2aebb3921deeda2
Reviewed-on: https://chromium-review.googlesource.com/1138801Reviewed-by: Evan Stade <estade@chromium.org>
Commit-Queue: Fabio Tirelo <ftirelo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575469}

chrome/browser/ui/views/autofill/autofill_popup_view_native_views.cc

@@ -90,6 +90,7 @@ class AutofillPopupItemView : public AutofillPopupRowView {
   // views::View:
   void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
   void OnMouseEntered(const ui::MouseEvent& event) override;
+  void OnMouseExited(const ui::MouseEvent& event) override;
   void OnMouseReleased(const ui::MouseEvent& event) override;
 
  protected:
@@ -172,6 +173,7 @@ class AutofillPopupSeparatorView : public AutofillPopupRowView {
   // views::View:
   void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
   void OnMouseEntered(const ui::MouseEvent& event) override {}
+  void OnMouseExited(const ui::MouseEvent& event) override {}
   void OnMouseReleased(const ui::MouseEvent& event) override {}
 
  protected:
@@ -253,6 +255,10 @@ void AutofillPopupItemView::OnMouseEntered(const ui::MouseEvent& event) {
   controller_->SetSelectedLine(line_number_);
 }
 
+void AutofillPopupItemView::OnMouseExited(const ui::MouseEvent& event) {
+  controller_->SelectionCleared();
+}
+
 void AutofillPopupItemView::OnMouseReleased(const ui::MouseEvent& event) {
   if (event.IsOnlyLeftMouseButton() && HitTestPoint(event.location()))
     controller_->AcceptSuggestion(line_number_);