[MD settings] tweaks to what is shown in about page; and css cleanup

chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html

Index: chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html
diff --git a/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html b/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html
index cf72ebb926811555a4c5e192c457a7812b574eee..4d5c64a84edc86f819cae63bb150c6eca4fdcd18 100644
--- a/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html
+++ b/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.html
@@ -17,10 +17,6 @@
 <dom-module id="settings-bluetooth-page">
   <template>
     <style include="settings-shared">
-      iron-icon {
-        -webkit-margin-end: var(--iron-icon-spacing);
-      }
-
       cr-expand-button {
         -webkit-margin-end: 10px;
       }
@@ -44,24 +40,22 @@
     <settings-animated-pages id="pages" section="bluetooth">
       <neon-animatable route-path="default">
         <div class="settings-box first">
-          <div class="layout horizontal center flex">
-            <iron-icon icon="settings:bluetooth"></iron-icon>
-            <span class="flex">$i18n{bluetoothEnable}</span>
-            <cr-expand-button id="expandListButton"
-                alt="$i18n{bluetoothExpandA11yLabel}"
-                hidden$="[[!bluetoothEnabled]]"
-                expanded="{{deviceListExpanded}}">
-            </cr-expand-button>
-            <paper-toggle-button id="enableBluetooth"
-                checked="{{bluetoothEnabled}}"
-                disabled="[[!adapterState.available]]"
-                on-change="onBluetoothEnabledChange_">
-            </paper-toggle-button>
-            <cr-policy-pref-indicator
-                pref="[[prefs.cros.device.allow_bluetooth]]"
-                hidden="[[prefs.cros.device.allow_bluetooth.value]]">
-            </cr-policy-pref-indicator>
-          </div>
+          <iron-icon icon="settings:bluetooth"></iron-icon>
+          <span class="middle">$i18n{bluetoothEnable}</span>
+          <cr-expand-button id="expandListButton"
+              alt="$i18n{bluetoothExpandA11yLabel}"
+              hidden$="[[!bluetoothEnabled]]"
+              expanded="{{deviceListExpanded}}">
+          </cr-expand-button>
+          <paper-toggle-button id="enableBluetooth"
+              checked="{{bluetoothEnabled}}"
+              disabled="[[!adapterState.available]]"
+              on-change="onBluetoothEnabledChange_">
+          </paper-toggle-button>
+          <cr-policy-pref-indicator
+              pref="[[prefs.cros.device.allow_bluetooth]]"
+              hidden="[[prefs.cros.device.allow_bluetooth.value]]">
+          </cr-policy-pref-indicator>
         </div>
         <iron-collapse opened="[[canShowDeviceList_(bluetoothEnabled,
                                                     deviceListExpanded)]]">