This CL adds support for extension in GYP.

test/ios/extension/ExtensionContainer/main.m

Index: test/ios/extension/ExtensionContainer/main.m
diff --git a/test/ios/extension/ExtensionContainer/main.m b/test/ios/extension/ExtensionContainer/main.m
new file mode 100644
index 0000000000000000000000000000000000000000..c02350790a82289e1eee2f284b2074e210427e2b
--- /dev/null
+++ b/test/ios/extension/ExtensionContainer/main.m
@@ -0,0 +1,17 @@
+//
+//  main.m
+//  ExtensionContainer
+//
+//  Created by Olivier Robin on 6/27/14.
+//  Copyright (c) 2014 Olivier Robin. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char * argv[]) {
+  @autoreleasepool {
+      return UIApplicationMain(argc, argv, nil,
+          NSStringFromClass([AppDelegate class]));
+  }
+}