MD Settings: re-fix relative paper-input-label font-size.

chrome/browser/resources/settings/settings_page/settings_subpage_search.html

 <link rel="import" href="chrome://resources/cr_elements/cr_search_field/cr_search_field_behavior.html">
 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-input-container.html">
 
 <dom-module id="settings-subpage-search">
   <template>
     <style>
       :host {
         --subpage-search-underline: {
           margin-bottom: -2px;
           margin-top: -2px;
         }
       }
 
       :host {
         --paper-input-container-underline: var(--subpage-search-underline);
         --paper-input-container-underline-focus:
             var(--subpage-search-underline);
         --paper-input-container-underline-disabled:
             var(--subpage-search-underline);
         --paper-input-suffix: {
           /* Required to align the icon in |clearSearch| vertically. */
           line-height: 0;
-        }
+        };
+
+        /**
+         * Kind of suck to have to hardcode these, but its necessary to
+         * make sure the conditional clear-icon will fit within input's height.
+         */
+        --paper-input-container-input: {
+          line-height: 24px;
+        };
+        --paper-input-container-label: {
+          line-height: 24px;
+        };
       }
 
       paper-icon-button {
         /* A 16px icon that fits on the input line. */
         height: 24px;
         padding: 4px;
         width: 24px;
       }
 
       #searchIcon {
         height: 16px;
         padding: 4px;
+        vertical-align: middle;
         width: 16px;
       }
 
       paper-input-container {
         display: inline-block;
+        vertical-align: middle;
         width: 160px;  /* Special width for search input. */
       }
 
       input[type='search']::-webkit-search-cancel-button {
         -webkit-appearance: none;
       }
 
       #prompt,
       #searchInput {
         font-size: 92.3076923%;  /* To 12px from 13px. */
@@ skipping 23 matching lines @@
           on-input="onSearchTermInput" aria-labelledby="prompt" incremental>
       </input>
       <paper-icon-button suffix icon="cr:cancel" id="clearSearch"
           on-tap="onTapClear_" title="[[clearLabel]]"
           hidden$="[[!hasSearchText]]">
       </paper-icon-button>
     </paper-input-container>
   </template>
   <script src="settings_subpage_search.js"></script>
 </dom-module>