Convert the downloads page to Polymer 0.8

chrome/browser/resources/settings/downloads_page/downloads_page.css

Index: chrome/browser/resources/settings/downloads_page/downloads_page.css
diff --git a/chrome/browser/resources/settings/checkbox/checkbox.css b/chrome/browser/resources/settings/downloads_page/downloads_page.css
similarity index 50%
copy from chrome/browser/resources/settings/checkbox/checkbox.css
copy to chrome/browser/resources/settings/downloads_page/downloads_page.css
index 0acbdbd9744e7944310ce53745569dc7c32800bc..5a47a431deedd81fb4d07b959f5b74da21ded829 100644
--- a/chrome/browser/resources/settings/checkbox/checkbox.css
+++ b/chrome/browser/resources/settings/downloads_page/downloads_page.css
@@ -2,18 +2,13 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
-#checkbox {
-  -webkit-margin-end: 10px;
+cr-input {
+  /* This ensures that the "Download location" label and the text in the input
+   * itself are vertically aligned. */
+  margin-bottom: 1em;
+  width: 300px;
 }
 
-core-label {
+#locationLabel {
   -webkit-margin-end: 10px;
-  -webkit-margin-start: 0;
-  margin-bottom: 10px;
-  margin-top: 10px;
-}
-
-.sub-label {
-  -webkit-margin-start: 10px;
-  color: rgba(0, 0, 0, .5);
 }