[MD WebUI] Move icons used in Bookmarks and Settings to shared file.

chrome/browser/resources/settings/about_page/about_page.html

Index: chrome/browser/resources/settings/about_page/about_page.html
diff --git a/chrome/browser/resources/settings/about_page/about_page.html b/chrome/browser/resources/settings/about_page/about_page.html
index 1c124b8c179e5f91a7a636396ba7832e31c913db..7f42f571d3b1025244e2a1e4dc96256e0bb348c1 100644
--- a/chrome/browser/resources/settings/about_page/about_page.html
+++ b/chrome/browser/resources/settings/about_page/about_page.html
@@ -1,7 +1,6 @@
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="/about_page/about_page_browser_proxy.html">
 <link rel="import" href="/i18n_setup.html">
-<link rel="import" href="/icons.html">
 <link rel="import" href="/lifetime_browser_proxy.html">
 <link rel="import" href="/route.html">
 <link rel="import" href="/settings_page/main_page_behavior.html">
@@ -52,11 +51,11 @@
         width: 32px;  /* The width of the product-logo img. */
       }
 
-      iron-icon[icon='settings:check-circle'] {
+      iron-icon[icon='cr:check-circle'] {
         fill: var(--paper-blue-600);
       }
 
-      iron-icon[icon='settings:error'] {
+      iron-icon[icon='cr:error'] {
         fill: var(--paper-red-600);
       }