Add a new App launcher promo to the apps page / NTP.

chrome/browser/resources/ntp4/new_tab.html

Index: chrome/browser/resources/ntp4/new_tab.html
diff --git a/chrome/browser/resources/ntp4/new_tab.html b/chrome/browser/resources/ntp4/new_tab.html
index e5bb3e39ecd26dfd23e498238b7fc5a1e048719f..760621f0dfc6d89d2fa0ee2d26287bae867759d4 100644
--- a/chrome/browser/resources/ntp4/new_tab.html
+++ b/chrome/browser/resources/ntp4/new_tab.html
@@ -93,6 +93,19 @@
     </div>
   </div>
 
+  <div class="app-launcher-promo" id="app-launcher-promo" hidden>
+    <div class="apps-promo-text" id="apps-promo-text"
+         i18n-content="appsPromoTitle">
+    </div>
+    <a href="https://chrome.google.com/webstore/launcher">
+      <div class="apps-promo-learn-more" id="apps-promo-learn-more"

[arv (Not doing code reviews), 2013/03/26 14:02:39]

This can be <a href="..." ... i18n-content="learn_more"></a>

Any time you have an extra wrapping element you should think why. There are some
useful cases (centering a block without using a flex box is one of the few valid
cases for example).

+           i18n-content="learn_more">
+      </div>
+    </a>
+    <img src="app_launcher_promo.png"></img>

[arv (Not doing code reviews), 2013/03/26 14:02:39]

Invalid html. This should be:

<img src="app_launcher_promo.png">

[MAD, 2013/03/26 15:42:43]

Done.

+    <div class="close-button" id="app-launcher-promo-close-button"></div>
+  </div>
+
   <div id="footer">
     <div id="footer-border"></div>
     <div id="footer-content">