Remove knowledge of Chrome-specific SyncableService classes from WebDataService.

chrome/browser/webdata/autofill_profile_syncable_service.h

Index: chrome/browser/webdata/autofill_profile_syncable_service.h
diff --git a/chrome/browser/webdata/autofill_profile_syncable_service.h b/chrome/browser/webdata/autofill_profile_syncable_service.h
index c55cec53b6d8dd359f379f131e7416af33c5ef74..714fbad810d9fd40bc6c78aa7f4ac95c4bc6f422 100644
--- a/chrome/browser/webdata/autofill_profile_syncable_service.h
+++ b/chrome/browser/webdata/autofill_profile_syncable_service.h
@@ -29,6 +29,7 @@ class AutofillTable;
 class FormGroup;
 class ProfileSyncServiceAutofillTest;
 class WebDataService;
+class WebDataServiceBase;
 
 extern const char kAutofillProfileTag[];
 
@@ -44,6 +45,15 @@ class AutofillProfileSyncableService
   explicit AutofillProfileSyncableService(WebDataService* web_data_service);
   virtual ~AutofillProfileSyncableService();
 
+  // Retrieves the AutofillProfileSyncableService stored on |web_data|.
+  static AutofillProfileSyncableService* FromWebData(
+      WebDataServiceBase* web_data);
+
+  // Attaches |service| to |web_data|, transferring ownership to |web_data|.
+  static void AttachToWebData(
+      scoped_ptr<AutofillProfileSyncableService> service,
+      WebDataServiceBase* web_data);
+
   static syncer::ModelType model_type() { return syncer::AUTOFILL_PROFILE; }
 
   // syncer::SyncableService implementation.