[Extensions Views] Update the extension installed bubble's sync promo

chrome/browser/ui/sync/bubble_sync_promo_delegate.h

Index: chrome/browser/ui/sync/bubble_sync_promo_delegate.h
diff --git a/chrome/browser/ui/sync/bubble_sync_promo_delegate.h b/chrome/browser/ui/sync/bubble_sync_promo_delegate.h
new file mode 100644
index 0000000000000000000000000000000000000000..0bc1c21244589aeddd140ad8f85dae2ee3d6c1a8
--- /dev/null
+++ b/chrome/browser/ui/sync/bubble_sync_promo_delegate.h
@@ -0,0 +1,14 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_UI_SYNC_BUBBLE_SYNC_PROMO_DELEGATE_H_
+#define CHROME_BROWSER_UI_SYNC_BUBBLE_SYNC_PROMO_DELEGATE_H_
+
+class BubbleSyncPromoDelegate {
+ public:
+  virtual ~BubbleSyncPromoDelegate() {}
+  virtual void OnSignInLinkClicked() = 0;
+};
+
+#endif  // CHROME_BROWSER_UI_SYNC_BUBBLE_SYNC_PROMO_DELEGATE_H_