Fixes the broken focus issue of 'OK, GOT IT' and 'UNDO' in the sync confirmation dialog.

chrome/browser/resources/sync_confirmation/sync_confirmation.html

Index: chrome/browser/resources/sync_confirmation/sync_confirmation.html
diff --git a/chrome/browser/resources/sync_confirmation/sync_confirmation.html b/chrome/browser/resources/sync_confirmation/sync_confirmation.html
index 8111fa4f914b720f5d69b28f5b2a555025ec6143..91f8d5b066fc862d9852db9c5d3f75315ec257fc 100644
--- a/chrome/browser/resources/sync_confirmation/sync_confirmation.html
+++ b/chrome/browser/resources/sync_confirmation/sync_confirmation.html
@@ -4,6 +4,7 @@
     <meta charset="utf-8">
     <link rel="import" href="chrome://resources/html/polymer.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-styles/color.html">
     <link rel="stylesheet" href="chrome://resources/css/text_defaults_md.css">
     <link rel="stylesheet" href="sync_confirmation.css"></link>
     <style is="custom-style">
@@ -12,6 +13,27 @@
         text-decoration: none;
       }
 
+      #confirmButton {
+        --paper-button: {
+          background: var(--google-blue-500);
+          color: white;
+        };
+        --paper-button-flat-keyboard-focus: {
+          background: rgb(58, 117, 215);
+          font-weight: 500;
+        };
+      }
+
+      #undoButton {
+        --paper-button: {
+          color: var(--paper-grey-600);
+        };
+        --paper-button-flat-keyboard-focus: {
+          background: rgba(0, 0, 0, .12);
+          font-weight: 500;
+        };
+      }
+
       .action-container {
 <if expr="is_macosx or is_linux">
         flex-flow: row-reverse;