cros: Open play store app for md-settings stylus "Find more apps" link

chrome/browser/resources/settings/device_page/device_page_browser_proxy.js

Index: chrome/browser/resources/settings/device_page/device_page_browser_proxy.js
diff --git a/chrome/browser/resources/settings/device_page/device_page_browser_proxy.js b/chrome/browser/resources/settings/device_page/device_page_browser_proxy.js
index e9d2737690b73fb7703a72bf947e364696fa35d4..e9a0c391da6af86562837e92d972c757d1a77c08 100644
--- a/chrome/browser/resources/settings/device_page/device_page_browser_proxy.js
+++ b/chrome/browser/resources/settings/device_page/device_page_browser_proxy.js
@@ -80,6 +80,12 @@ cr.define('settings', function() {
     setNoteTakingAppsUpdatedCallback: function(callback) {},
 
     /**
+     * Open up the play store with the given URL.
+     * @param {string} url
+     */
+    showPlayStore: function(url) {},
+
+    /**
      * Request current note-taking app info. Invokes any callback registered in
      * |onNoteTakingAppsUpdated|.
      */
@@ -145,6 +151,11 @@ cr.define('settings', function() {
     },
 
     /** @override */
+    showPlayStore: function(url) {
+      chrome.send('showPlayStoreApps', [url]);
+    },
+
+    /** @override */
     requestNoteTakingApps: function() {
       chrome.send('requestNoteTakingApps');
     },