MD Settings: change most checkboxes to toggles (leave dialogs alone)

chrome/browser/resources/settings/downloads_page/downloads_page.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/classes/iron-flex-layout.html">
 <link rel="import" href="/controls/controlled_button.html">
-<link rel="import" href="/controls/settings_checkbox.html">
+<link rel="import" href="/controls/settings_toggle_button.html">
 <link rel="import" href="/settings_shared_css.html">
 
 <dom-module id="settings-downloads-page">
   <template>
-    <style include="settings-shared"></style>
+    <style include="settings-shared">
+      .secondary-action {
+        text-align: end;
+      }
+    </style>
     <div class="settings-box first two-line">
       <div class="start">
         <div>$i18n{downloadLocation}</div>
         <div class="secondary">
           [[getDownloadLocation_(prefs.download.default_directory.value)]]
         </div>
       </div>
       <div class="secondary-action">
         <controlled-button class="secondary-button" id="changeDownloadsPath"
             on-tap="selectDownloadLocation_"
-            pref="[[prefs.download.default_directory]]">
+            pref="[[prefs.download.default_directory]]"
+            right-justified>

[dschuyler, 2017/01/05 20:25:05]

Will this work well in RTL?

[Dan Beam, 2017/01/06 02:45:29]

yes, renamed in https://codereview.chromium.org/2615093003/

           $i18n{changeDownloadLocation}
         </controlled-button>
       </div>
     </div>
     <div class="settings-box block">
-      <settings-checkbox pref="{{prefs.download.prompt_for_download}}"
+      <settings-toggle-button
+          pref="{{prefs.download.prompt_for_download}}"
           label="$i18n{promptForDownload}">
-      </settings-checkbox>
+      </settings-toggle-button>
 <if expr="chromeos">
-      <settings-checkbox pref="{{prefs.gdata.disabled}}"
+      <settings-toggle-button
+          pref="{{prefs.gdata.disabled}}"
           label="$i18n{disconnectGoogleDriveAccount}"
           hidden="[[!pageVisibility.googleDrive]]">
-      </settings-checkbox>
+      </settings-toggle-button>
 </if>
     </div>
   </template>
   <script src="downloads_page.js"></script>
 </dom-module>