Rename SyncNotifier->Invalidator and SyncNotifierObserver->InvalidationHandler.

chrome/browser/sync/invalidation_frontend.h

Index: chrome/browser/sync/invalidation_frontend.h
diff --git a/chrome/browser/sync/invalidation_frontend.h b/chrome/browser/sync/invalidation_frontend.h
index 991427157ee596acbdc0f4a80e34de75d93b5749..87d6a97ab7aaca44a2b17404208a8c73fbb29870 100644
--- a/chrome/browser/sync/invalidation_frontend.h
+++ b/chrome/browser/sync/invalidation_frontend.h
@@ -8,7 +8,7 @@
 #include "sync/notifier/invalidation_util.h"
 
 namespace syncer {
-class SyncNotifierObserver;
+class InvalidationHandler;
 }  // namespace syncer
 
 // Interface for classes that handle invalidation registrations and send out
@@ -20,7 +20,7 @@ class InvalidationFrontend {
   //
   // Handler registrations are persisted across restarts of sync.
   virtual void RegisterInvalidationHandler(
-      syncer::SyncNotifierObserver* handler) = 0;
+      syncer::InvalidationHandler* handler) = 0;
 
   // Updates the set of ObjectIds associated with |handler|.  |handler| must
   // not be NULL, and must already be registered.  An ID must be registered for
@@ -28,7 +28,7 @@ class InvalidationFrontend {
   //
   // Registered IDs are persisted across restarts of sync.
   virtual void UpdateRegisteredInvalidationIds(
-      syncer::SyncNotifierObserver* handler,
+      syncer::InvalidationHandler* handler,
       const syncer::ObjectIdSet& ids) = 0;
 
   // Stops sending notifications to |handler|.  |handler| must not be NULL, and
@@ -37,7 +37,7 @@ class InvalidationFrontend {
   //
   // Handler registrations are persisted across restarts of sync.
   virtual void UnregisterInvalidationHandler(
-      syncer::SyncNotifierObserver* handler) = 0;
+      syncer::InvalidationHandler* handler) = 0;
 
  protected:
   virtual ~InvalidationFrontend() { }