Adjust action bar search box height

Sets the height of the search box wrapper to 40px and ensures the
contained buttons and input field are vertically centered.

Bug: 992823
Change-Id: I1bcd5e38e1268e1a382ff28304c447e2988fed6d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2060400
Commit-Queue: Alex Danilo <adanilo@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#742346}

ui/file_manager/file_manager/foreground/css/file_manager.css

@@ -671,6 +671,11 @@ html[dir='rtl'] .dialog-header button.icon-button > files-toggle-ripple {
   display: flex;
 }
 
+.dialog-header.files-ng #search-wrapper {
+  align-items: center;
+  height: 40px;
+}
+
 .dialog-header.files-ng #search-wrapper.has-cursor,
 .dialog-header.files-ng #search-wrapper.hide-pending {
   background-color: var(--google-grey-100);