Add a skeleton Start Page to the experimental app list.

chrome/browser/resources/app_list/start_page.css

Index: chrome/browser/resources/app_list/start_page.css
diff --git a/chrome/browser/resources/app_list/start_page.css b/chrome/browser/resources/app_list/start_page.css
index cd8f3c0fddeed2d2f96fde7567bb5025da12ee92..c67ce5f028c7faa80edeb093fe9c1fb272d2f254 100644
--- a/chrome/browser/resources/app_list/start_page.css
+++ b/chrome/browser/resources/app_list/start_page.css
@@ -5,7 +5,7 @@
 html,
 body,
 #start-page {
-  background-color: rgb(245, 245, 245);
+  background-color: rgb(251, 251, 251);
   height: 100%;
   margin: 0;
   overflow: hidden;
@@ -23,4 +23,13 @@ body,
   padding: 10px;
 }
 
+#logo {
+  background-image: -webkit-image-set(
+    url('chrome://theme/IDR_LOCAL_NTP_IMAGES_LOGO_PNG') 1x,
+    url('chrome://theme/IDR_LOCAL_NTP_IMAGES_LOGO_PNG@2x') 2x);
+  height: 95px;
+  margin: auto;
+  width: 269px;
+}
+
 <include src="recommended_apps.css"/>