Remove WebUI NTP on Android.

chrome/browser/ui/webui/ntp/ntp_login_handler.cc

Index: chrome/browser/ui/webui/ntp/ntp_login_handler.cc
diff --git a/chrome/browser/ui/webui/ntp/ntp_login_handler.cc b/chrome/browser/ui/webui/ntp/ntp_login_handler.cc
index 65459a3e34066d42276ffc3f33c1a366ee5ab85f..84f8290e67655f88329a4d43da213b1e04113cff 100644
--- a/chrome/browser/ui/webui/ntp/ntp_login_handler.cc
+++ b/chrome/browser/ui/webui/ntp/ntp_login_handler.cc
@@ -132,7 +132,6 @@ void NTPLoginHandler::HandleShowSyncLoginUI(const base::ListValue* args) {
     return;
 
   if (username.empty()) {
-#if !defined(OS_ANDROID)
     // The user isn't signed in, show the sign in promo.
     if (signin::ShouldShowPromo(profile)) {
       signin::Source source =
@@ -142,7 +141,6 @@ void NTPLoginHandler::HandleShowSyncLoginUI(const base::ListValue* args) {
       chrome::ShowBrowserSignin(browser, source);
       RecordInHistogram(NTP_SIGN_IN_PROMO_CLICKED);
     }
-#endif
   } else if (args->GetSize() == 4) {
     // The user is signed in, show the profiles menu.
     double x = 0;
@@ -223,12 +221,8 @@ void NTPLoginHandler::UpdateLogin() {
       }
     }
   } else {
-#if !defined(OS_ANDROID) && !defined(OS_CHROMEOS)
-    // Android uses a custom sign in promo. Don't call the function
-    // signin::ShouldShowPromo() since it does a bunch of checks that are not
-    // required here.  We only want to suppress this login status for users that
-    // are not allowed to sign in.  Chromeos does not show this status header
-    // at all.
+#if !defined(OS_CHROMEOS)
+    // Chromeos does not show this status header.
     SigninManager* signin = SigninManagerFactory::GetForProfile(
         profile->GetOriginalProfile());
     if (!profile->IsManaged() && signin->IsSigninAllowed()) {