Settings People Revamp: Add Manage Synced Data row to Sync Page.

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 (function() {
 
 /**
  * Names of the radio buttons which allow the user to choose his encryption
  * mechanism.
  * @enum {string}
@@ skipping 191 matching lines @@
 
   /**
    * Handler for when any sync data type checkbox is changed.
    * @private
    */
   onSingleSyncDataTypeChanged_: function() {
     this.browserProxy_.setSyncDatatypes(this.syncPrefs).then(
         this.handlePageStatusChanged_.bind(this));
   },
 
+  /** @private */
+  onManageSyncedDataTap_: function() {
+    window.open(loadTimeData.getString('syncDashboardUrl'));
+  },
+
   /**
    * Sends the newly created custom sync passphrase to the browser.
    * @private
    */
   onSaveNewPassphraseTap_: function() {
     assert(this.creatingNewPassphrase_);
 
     // If a new password has been entered but it is invalid, do not send the
     // sync state to the API.
     if (!this.validateCreatedPassphrases_())
@@ skipping 112 matching lines @@
 
     passphraseInput.invalid = emptyPassphrase;
     passphraseConfirmationInput.invalid =
         !emptyPassphrase && mismatchedPassphrase;
 
     return !emptyPassphrase && !mismatchedPassphrase;
   },
 });
 
 })();