Remove WebUI NTP on Android.

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index ac49c1dfce81fa2e55807059079e5a576445332f..b51267ce207dd884fb05a75b41e43eaa378e9c6e 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -1021,7 +1021,6 @@ void ExtensionService::NotifyExtensionLoaded(const Extension* extension) {
     ThemeSource* theme_source = new ThemeSource(profile_);
     content::URLDataSource::Add(profile_, theme_source);
   }
-#endif
 
   // Same for chrome://thumb/ resources.
   if (extensions::PermissionsData::HasHostPermission(
@@ -1029,6 +1028,7 @@ void ExtensionService::NotifyExtensionLoaded(const Extension* extension) {
     ThumbnailSource* thumbnail_source = new ThumbnailSource(profile_, false);
     content::URLDataSource::Add(profile_, thumbnail_source);
   }
+#endif
 }
 
 void ExtensionService::NotifyExtensionUnloaded(