Plumb requireInteraction to PlatformNotificationData & database

content/public/common/platform_notification_data.h

Index: content/public/common/platform_notification_data.h
diff --git a/content/public/common/platform_notification_data.h b/content/public/common/platform_notification_data.h
index 5f43aeeaf6a619a8903357960a17792b800d3916..12f4eee9797daa856d5ec8fef4835c6f16e66ee0 100644
--- a/content/public/common/platform_notification_data.h
+++ b/content/public/common/platform_notification_data.h
@@ -72,6 +72,10 @@ struct CONTENT_EXPORT PlatformNotificationData {
   // be suppressed.
   bool silent = false;
 
+  // Whether the notification should remain onscreen indefinitely, rather than

[Peter Beverloo, 2015/08/27 14:20:46]

I'd prefer this description to be a little bit higher level. Implementation of
the require_interaction flag is left up to the platform notification center
(i.e. message_center and Android).

+  // being auto-minimized to the notification center (if allowed by platform).
+  bool require_interaction = false;
+
   // Developer-provided data associated with the notification, in the form of
   // a serialized string. Must not exceed |kMaximumDeveloperDataSize| bytes.
   std::vector<char> data;