aura: Remove apps from NTP4 and disable NTP4 intro bubble.

chrome/browser/resources/ntp4/page_list_view.js

Index: chrome/browser/resources/ntp4/page_list_view.js
diff --git a/chrome/browser/resources/ntp4/page_list_view.js b/chrome/browser/resources/ntp4/page_list_view.js
index 0ae63202bbcf4fdbc6de10bc3280ce1f8caf949a..5c2bd3e56119f590919823b1b31bcc3e520e2604 100644
--- a/chrome/browser/resources/ntp4/page_list_view.js
+++ b/chrome/browser/resources/ntp4/page_list_view.js
@@ -153,10 +153,21 @@ cr.define('ntp', function() {
       this.shownPage = templateData.shown_page_type;
       this.shownPageIndex = templateData.shown_page_index;
 
-      // Request data on the apps so we can fill them in.
-      // Note that this is kicked off asynchronously.  'getAppsCallback' will be
-      // invoked at some point after this function returns.
-      chrome.send('getApps');
+      if (templateData.showAppsPage) {
+        // Request data on the apps so we can fill them in.
+        // Note that this is kicked off asynchronously.  'getAppsCallback' will
+        // be invoked at some point after this function returns.
+        chrome.send('getApps');
+      } else {
+        // No apps page.
+        if (this.shownPage == templateData['apps_page_id']) {
+          this.shownPage = templateData['most_visited_page_id'];
+          this.shownPageIndex = 0;
+        }
+
+        // Mark section ready asynchronously soon after.
+        window.setTimeout(this.markSectionReady_.bind(this), 0);
+      }
 
       document.addEventListener('keydown', this.onDocKeyDown_.bind(this));
       // Prevent touch events from triggering any sort of native scrolling
@@ -366,18 +377,25 @@ cr.define('ntp', function() {
 
       this.cardSlider.currentCard = prevCurrentCard;
 
-      // Tell the slider about the pages.
-      this.updateSliderCards();
-
       if (highlightApp)
         this.appAdded(highlightApp, true);
 
+      logEvent('apps.layout: ' + (Date.now() - startTime));
+
+      this.markSectionReady_();
+    },
+
+    /**
+     * Marks section ready.
+     * @private
+     */
+   markSectionReady_: function() {
+      // Tell the slider about the pages.
+      this.updateSliderCards();
       // Mark the current page.
       this.cardSlider.currentCardValue.navigationDot.classList.add('selected');
-      logEvent('apps.layout: ' + (Date.now() - startTime));
 
       document.documentElement.classList.remove('starting-up');
-
       cr.dispatchSimpleEvent(document, 'sectionready', true, true);
     },