MD Settings: Fix sync page layout after removing iron-flex-layout.html usage.

chrome/browser/resources/settings/people_page/sync_page.html

Index: chrome/browser/resources/settings/people_page/sync_page.html
diff --git a/chrome/browser/resources/settings/people_page/sync_page.html b/chrome/browser/resources/settings/people_page/sync_page.html
index 32bf38d809db1bc39e7244e524a219ea85b969a5..fd3f42e7fb30ca53f43e796e8bfdac46bcb8b41b 100644
--- a/chrome/browser/resources/settings/people_page/sync_page.html
+++ b/chrome/browser/resources/settings/people_page/sync_page.html
@@ -2,6 +2,7 @@
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-a11y-keys/iron-a11y-keys.html">
+<link rel="import" href="chrome://resources/polymer/v1_0/iron-flex-layout/iron-flex-layout-classes.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-toggle-button/paper-toggle-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-input.html">
@@ -13,7 +14,7 @@
 
 <dom-module id="settings-sync-page">
   <template>
-    <style include="settings-shared">
+    <style include="settings-shared iron-flex">
       #create-password-box,
       #reset-sync-message-box {
         /* In order to line up with the encryption radio box text. */