[Sync] Move some extension-sync-related logic to ExtensionService

chrome/browser/sync/glue/extension_util.h

Index: chrome/browser/sync/glue/extension_util.h
diff --git a/chrome/browser/sync/glue/extension_util.h b/chrome/browser/sync/glue/extension_util.h
index 6433dfd83aa7c6af052816845ceb9341522e3728..68dd06eaa988faac9680c7a9ecf4d89242968cb6 100644
--- a/chrome/browser/sync/glue/extension_util.h
+++ b/chrome/browser/sync/glue/extension_util.h
@@ -11,9 +11,11 @@
 
 #include <string>
 
-class Extension;
+#include "chrome/common/extensions/extension.h"
+
 class ExtensionPrefs;
 class ExtensionServiceInterface;
+class ExtensionSyncData;
 struct UninstalledExtensionInfo;
 
 namespace sync_pb {
@@ -84,12 +86,6 @@ void GetExtensionSpecifics(const Extension& extension,
                            const ExtensionServiceInterface& extension_service,
                            sync_pb::ExtensionSpecifics* specifics);
 
-// Returns whether or not the extension should be updated according to
-// the specifics.  |extension| must be syncable and |specifics| must
-// be valid.
-bool IsExtensionOutdated(const Extension& extension,
-                         const sync_pb::ExtensionSpecifics& specifics);
-
 // Merge |specifics| into |merged_specifics|.  Both must be valid and
 // have the same ID.  The merge policy is currently to copy the
 // non-user properties of |specifics| into |merged_specifics| (and the
@@ -100,6 +96,23 @@ void MergeExtensionSpecifics(
     bool merge_user_properties,
     sync_pb::ExtensionSpecifics* merged_specifics);
 
+// Fills |sync_data| with the data from |specifics|.  Returns true iff
+// succesful.
+bool GetExtensionSyncData(
+    const sync_pb::ExtensionSpecifics& specifics,
+    ExtensionSyncData* sync_data);
+
+// Predicates used to filter sets of extensions.
+
+bool IsSyncableExtension(Extension::Type type, const GURL& update_url);
+
+bool IsValidAndSyncableExtension(const Extension& extension);
+
+bool IsSyncableApp(Extension::Type type);
+
+bool IsValidAndSyncableApp(
+    const Extension& extension);
+
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_SYNC_GLUE_EXTENSION_UTIL_H_