This CL adds support for extension in GYP.

test/ios/extension/ExtensionContainer/ViewController.m

Index: test/ios/extension/ExtensionContainer/ViewController.m
diff --git a/test/ios/extension/ExtensionContainer/ViewController.m b/test/ios/extension/ExtensionContainer/ViewController.m
new file mode 100644
index 0000000000000000000000000000000000000000..7600cffcbaed70f1ea9242d463c39a6e85e7bf6c
--- /dev/null
+++ b/test/ios/extension/ExtensionContainer/ViewController.m
@@ -0,0 +1,28 @@
+//
+//  ViewController.m
+//  ExtensionContainer
+//
+//  Created by Olivier Robin on 6/27/14.
+//  Copyright (c) 2014 Olivier Robin. All rights reserved.
+//
+
+#import "ViewController.h"
+
+@interface ViewController ()
+
+
+@end
+
+@implementation ViewController
+
+- (void)viewDidLoad {
+  [super viewDidLoad];
+  // Do any additional setup after loading the view, typically from a nib.
+}
+
+- (void)didReceiveMemoryWarning {
+  [super didReceiveMemoryWarning];
+  // Dispose of any resources that can be recreated.
+}
+
+@end