[quickview] Minor file-ng style updates after CL:2067764

 - move related CSS file-ng and not files-ng rules together
 - file-ng cr-button: no shadow, and account for 2px border

Bug: 992824
Change-Id: I7d56a0e98df0384763007558e8ea15c85f5913f4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2069977
Auto-Submit: Noel Gordon <noel@chromium.org>
Reviewed-by: Alex Danilo <adanilo@chromium.org>
Commit-Queue: Alex Danilo <adanilo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743872}

ui/file_manager/file_manager/foreground/elements/files_quick_view.css

@@ -47,15 +47,6 @@ dialog#delete-confirm-dialog::backdrop {
   max-width: 100%;
 }
 
-:host(:not([files-ng])) cr-button:focus:not(:active) {
-  box-shadow: 0 0 0 1px rgba(66, 133, 244, 0.5);
-  font-weight: bold;
-}
-
-:host([files-ng]) {
-  box-shadow: none;
-}
-
 #audio-artwork {
   height: 100%;
   margin: 0 auto;
@@ -185,11 +176,12 @@ dialog#delete-confirm-dialog::backdrop {
   --text-color: currentColor;
   border: 2px solid transparent;
   border-radius: 50%;
+  box-shadow: none;
   box-sizing: border-box;
   height: 36px;
   margin: 0 6px;
   min-width: 36px;
-  padding: calc(6px - 1px);
+  padding: calc(6px - 2px);
   width: 36px;
 }
 
@@ -265,6 +257,11 @@ iron-icon {
   -webkit-mask-image: url(../images/files/ui/info.svg);
 }
 
+:host(:not([files-ng])) cr-button:focus:not(:active) {
+  box-shadow: 0 0 0 1px rgba(66, 133, 244, 0.5);
+  font-weight: bold;
+}
+
 :host([files-ng]) cr-button:focus:not(:active) {
   border: 2px solid var(--google-blue-300);
 }