Enable sync for the settings from the Extension Settings API.

chrome/browser/sync/glue/extension_setting_data_type_controller.h

Index: chrome/browser/sync/glue/extension_setting_data_type_controller.h
diff --git a/chrome/browser/sync/glue/extension_setting_data_type_controller.h b/chrome/browser/sync/glue/extension_setting_data_type_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..9e7ef01a58c30e9d5953d33e393fcc2f5e938772
--- /dev/null
+++ b/chrome/browser/sync/glue/extension_setting_data_type_controller.h
@@ -0,0 +1,41 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_SYNC_GLUE_EXTENSION_SETTING_DATA_TYPE_CONTROLLER_H__
+#define CHROME_BROWSER_SYNC_GLUE_EXTENSION_SETTING_DATA_TYPE_CONTROLLER_H__
+#pragma once
+
+#include <string>
+
+#include "base/compiler_specific.h"
+#include "chrome/browser/sync/glue/frontend_data_type_controller.h"
+
+namespace browser_sync {
+
+class ExtensionSettingDataTypeController : public FrontendDataTypeController {

[akalin, 2011/09/14 05:57:29]

So this should be a NonFrontendDataTypeController, now that it lives on the FILE
thread

[not at google - send to devlin, 2011/09/14 20:23:57]

That would explain why the DCHECKs I originally had re FILE thread were failing.

+ public:
+  ExtensionSettingDataTypeController(
+      ProfileSyncFactory* profile_sync_factory,
+      Profile* profile,
+      ProfileSyncService* sync_service);
+  virtual ~ExtensionSettingDataTypeController();
+
+  // FrontendDataTypeController implementation.
+  virtual syncable::ModelType type() const OVERRIDE;
+
+ private:
+  // FrontendDataTypeController implementations.
+  virtual void CreateSyncComponents() OVERRIDE;
+  virtual void RecordUnrecoverableError(
+      const tracked_objects::Location& from_here,
+      const std::string& message) OVERRIDE;
+  virtual void RecordAssociationTime(base::TimeDelta time) OVERRIDE;
+  virtual void RecordStartFailure(StartResult result) OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionSettingDataTypeController);
+};
+
+}  // namespace browser_sync
+
+#endif  // CHROME_BROWSER_SYNC_GLUE_EXTENSION_SETTING_DATA_TYPE_CONTROLLER_H__