Added classes to enable session sync functionality.

chrome/browser/sync/syncable/model_type.cc

Index: chrome/browser/sync/syncable/model_type.cc
diff --git a/chrome/browser/sync/syncable/model_type.cc b/chrome/browser/sync/syncable/model_type.cc
index bb1de93a45c50547fd2e99447f2bc0314a9d3f21..5a06be84d43d53fd87f7a1e33b421bb636c1f3f5 100644
--- a/chrome/browser/sync/syncable/model_type.cc
+++ b/chrome/browser/sync/syncable/model_type.cc
@@ -12,6 +12,7 @@
 #include "chrome/browser/sync/protocol/nigori_specifics.pb.h"
 #include "chrome/browser/sync/protocol/password_specifics.pb.h"
 #include "chrome/browser/sync/protocol/preference_specifics.pb.h"
+#include "chrome/browser/sync/protocol/session_specifics.pb.h"
 #include "chrome/browser/sync/protocol/sync.pb.h"
 #include "chrome/browser/sync/protocol/theme_specifics.pb.h"
 #include "chrome/browser/sync/protocol/typed_url_specifics.pb.h"
@@ -45,6 +46,9 @@ void AddDefaultExtensionValue(syncable::ModelType datatype,
     case NIGORI:
       specifics->MutableExtension(sync_pb::nigori);
       break;
+    case SESSIONS:
+      specifics->MutableExtension(sync_pb::session);
+      break;
     case APPS:
       specifics->MutableExtension(sync_pb::app);
       break;
@@ -112,6 +116,9 @@ ModelType GetModelTypeFromSpecifics(const sync_pb::EntitySpecifics& specifics) {
   if (specifics.HasExtension(sync_pb::app))
     return APPS;
 
+  if (specifics.HasExtension(sync_pb::session))
+    return SESSIONS;
+
   return UNSPECIFIED;
 }
 
@@ -133,6 +140,8 @@ std::string ModelTypeToString(ModelType model_type) {
       return "Extensions";
     case NIGORI:
       return "Encryption keys";
+    case SESSIONS:
+      return "Sessions";
     case APPS:
       return "Apps";
     default:
@@ -153,6 +162,7 @@ const char kTypedUrlNotificationType[] = "TYPED_URL";
 const char kExtensionNotificationType[] = "EXTENSION";
 const char kNigoriNotificationType[] = "NIGORI";
 const char kAppNotificationType[] = "APP";
+const char kSessionNotificationType[] = "SESSION";
 // TODO(akalin): This is a hack to make new sync data types work with
 // server-issued notifications.  Remove this when it's not needed
 // anymore.
@@ -189,6 +199,9 @@ bool RealModelTypeToNotificationType(ModelType model_type,
     case APPS:
       *notification_type = kAppNotificationType;
       return true;
+    case SESSIONS:
+      *notification_type = kSessionNotificationType;
+      return true;
     // TODO(akalin): This is a hack to make new sync data types work with
     // server-issued notifications.  Remove this when it's not needed
     // anymore.
@@ -231,7 +244,11 @@ bool NotificationTypeToRealModelType(const std::string& notification_type,
   } else if (notification_type == kAppNotificationType) {
     *model_type = APPS;
     return true;
-  } else if (notification_type == kUnknownNotificationType) {
+  } else if (notification_type == kSessionNotificationType) {
+    *model_type = SESSIONS;
+    return true;
+  }
+  else if (notification_type == kUnknownNotificationType) {

[akalin, 2010/08/17 21:34:47]

move "else if" to be on previous line, i.e. "} else if"

     // TODO(akalin): This is a hack to make new sync data types work with
     // server-issued notifications.  Remove this when it's not needed
     // anymore.