[MD settings] adding homepage url input

chrome/browser/resources/settings/appearance_page/appearance_page.js

Index: chrome/browser/resources/settings/appearance_page/appearance_page.js
diff --git a/chrome/browser/resources/settings/appearance_page/appearance_page.js b/chrome/browser/resources/settings/appearance_page/appearance_page.js
index 94f99e6a873d7e30638d3d63063e53151c85b304..c7da09b3a6309cf4b0d696dbb6bed4911115ac71 100644
--- a/chrome/browser/resources/settings/appearance_page/appearance_page.js
+++ b/chrome/browser/resources/settings/appearance_page/appearance_page.js
@@ -29,12 +29,20 @@ Polymer({
       notify: true,
     },
 
+    // prefs.homepage.value
+    homepage_: {
+      type: String,
+      notify: true,
+    },
+
     i18n_: {
       type: Object,
       value: function() {
         return {
+          changeHomePage: loadTimeData.getString('changeHomePage'),
           homePageNtp: loadTimeData.getString('homePageNtp'),
           openThisPage: loadTimeData.getString('openThisPage'),
+          onStartupEnterUrl: loadTimeData.getString('onStartupEnterUrl'),
         };
       },
     },
@@ -44,11 +52,12 @@ Polymer({
       type: String,
       notify: true,
       observer: 'isNewTabPageStringChanged_',
-    }
+    },
   },
 
   observers: [
     'homepageIsNewTabPageChanged_(prefs.homepage_is_newtabpage.value)',
+    'homepageChanged_(prefs.homepage.value)',
   ],
 
   /** @override */
@@ -63,6 +72,16 @@ Polymer({
   },
 
   /** @private */
+  onSetHomepageTap_: function() {
+    this.set('prefs.homepage.value', this.homepage_);
+  },
+
+  /** @private */
+  homepageChanged_: function(newValue) {
+    this.homepage_ = newValue;
+  },
+
+  /** @private */
   homepageIsNewTabPageChanged_: function(newValue) {
     this.isNewTabPageString_ = (newValue == true).toString();
   },