Fix misaligned No Search Results text

- Fix was to include the cups-printer-shared styles in
  CupsSavedPrinters.

Bug: 1020526
Change-Id: Idffcd0d64eef0f5bd923497214b88250bac15746
Tests: Manual
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1895316Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: jimmy gong <jimmyxgong@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712199}

chrome/browser/resources/settings/printing_page/cups_saved_printers.html

@@ -13,7 +13,7 @@
 
 <dom-module id="settings-cups-saved-printers">
   <template>
-    <style include="settings-shared iron-flex iron-flex-alignment
+    <style include="cups-printer-shared iron-flex iron-flex-alignment
         iron-flex-factors">
       :host {
         display: flex;