Add hideKeyboard API to chrome.experimental.input.

content/common/notification_type.h

Index: content/common/notification_type.h
diff --git a/content/common/notification_type.h b/content/common/notification_type.h
index 777f761efafae40fffc3dde7bede67d4ec32fbf8..5b735787c1ae9f7baea6c2e42a2e047117128002 100644
--- a/content/common/notification_type.h
+++ b/content/common/notification_type.h
@@ -1298,6 +1298,11 @@ class NotificationType {
     // Sent when a new web store promo has been loaded.
     WEB_STORE_PROMO_LOADED,
 
+#if defined(TOUCH_UI)
+    // Sent when an API for hiding the keyboard is invoked from JavaScript code.
+    HIDE_KEYBOARD_INVOKED,
+#endif
+
     // Count (must be last) ----------------------------------------------------
     // Used to determine the number of notification types.  Not valid as
     // a type parameter when registering for or posting notifications.