Revert 138216 - [Sync] Turn notifier::PushClient into an interface

jingle/notifier/listener/notification_defines.h

Index: jingle/notifier/listener/notification_defines.h
===================================================================
--- jingle/notifier/listener/notification_defines.h	(revision 138220)
+++ jingle/notifier/listener/notification_defines.h	(working copy)
@@ -11,10 +11,6 @@
 namespace notifier {
 
 struct Subscription {
-  Subscription();
-  ~Subscription();
-  bool Equals(const Subscription& other) const;
-
   // The name of the channel to subscribe to; usually but not always
   // a URL.
   std::string channel;
@@ -25,15 +21,8 @@
 
 typedef std::vector<Subscription> SubscriptionList;
 
-bool SubscriptionListsEqual(const SubscriptionList& subscriptions1,
-                            const SubscriptionList& subscriptions2);
-
 // A structure representing a <recipient/> block within a push message.
 struct Recipient {
-  Recipient();
-  ~Recipient();
-  bool Equals(const Recipient& other) const;
-
   // The bare jid of the recipient.
   std::string to;
   // User-specific data for the recipient.
@@ -42,9 +31,6 @@
 
 typedef std::vector<Recipient> RecipientList;
 
-bool RecipientListsEqual(const RecipientList& recipients1,
-                         const RecipientList& recipients2);
-
 struct Notification {
   Notification();
   ~Notification();
@@ -56,7 +42,6 @@
   // The notification data payload.
   std::string data;
 
-  bool Equals(const Notification& other) const;
   std::string ToString() const;
 };