sync: Expose ProtocolEvents on ProfileSyncService

Adds code to the sync engine to have it generate protocol events when it
contacts the server.  These events are then sent through the
SyncSession, SyncManager, SyncBackendHostCore, SyncBackendHost, and
finally to the ProfileSyncService.

Objects on the UI thread can register with the ProfileSyncService as
observers of these events, though this CL does not introduce any of
these listeners.

BUG=349301

Review URL: https://codereview.chromium.org/203463005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@258685 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 14 insertions, 0 deletions

diff --git a/sync/engine/get_updates_delegate.h b/sync/engine/get_updates_delegate.h
index 9ebc6d8..d897edf 100644
--- a/sync/engine/get_updates_delegate.h
+++ b/sync/engine/get_updates_delegate.h
@@ -5,6 +5,7 @@
 #ifndef SYNC_ENGINE_GET_UPDATES_DELEGATE_H_
 #define SYNC_ENGINE_GET_UPDATES_DELEGATE_H_
 
+#include "sync/internal_api/public/events/protocol_event.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/sessions/model_type_registry.h"
 #include "sync/sessions/nudge_tracker.h"
@@ -31,6 +32,10 @@ class SYNC_EXPORT_PRIVATE GetUpdatesDelegate {
   virtual void ApplyUpdates(
       sessions::StatusController* session,
       UpdateHandlerMap* update_handler_map) const = 0;
+
+  virtual scoped_ptr<ProtocolEvent> GetNetworkRequestEvent(
+      base::Time timestamp,
+      const sync_pb::ClientToServerMessage& request) const = 0;
 };
 
 // Functionality specific to the normal GetUpdate request.
@@ -48,6 +53,9 @@ class SYNC_EXPORT_PRIVATE NormalGetUpdatesDelegate : public GetUpdatesDelegate {
       sessions::StatusController* status,
       UpdateHandlerMap* update_handler_map) const OVERRIDE;
 
+  virtual scoped_ptr<ProtocolEvent> GetNetworkRequestEvent(
+      base::Time timestamp,
+      const sync_pb::ClientToServerMessage& request) const OVERRIDE;
  private:
   DISALLOW_COPY_AND_ASSIGN(NormalGetUpdatesDelegate);
 
@@ -74,6 +82,9 @@ class SYNC_EXPORT_PRIVATE ConfigureGetUpdatesDelegate
       sessions::StatusController* status,
       UpdateHandlerMap* update_handler_map) const OVERRIDE;
 
+  virtual scoped_ptr<ProtocolEvent> GetNetworkRequestEvent(
+      base::Time timestamp,
+      const sync_pb::ClientToServerMessage& request) const OVERRIDE;
  private:
   DISALLOW_COPY_AND_ASSIGN(ConfigureGetUpdatesDelegate);
 
@@ -98,6 +109,9 @@ class SYNC_EXPORT_PRIVATE PollGetUpdatesDelegate : public GetUpdatesDelegate {
       sessions::StatusController* status,
       UpdateHandlerMap* update_handler_map) const OVERRIDE;
 
+  virtual scoped_ptr<ProtocolEvent> GetNetworkRequestEvent(
+      base::Time timestamp,
+      const sync_pb::ClientToServerMessage& request) const OVERRIDE;
  private:
   DISALLOW_COPY_AND_ASSIGN(PollGetUpdatesDelegate);
 };