sync: Add GetAllSyncData to sync/api

chrome/browser/webdata/autofill_profile_syncable_service_unittest.cc

Index: chrome/browser/webdata/autofill_profile_syncable_service_unittest.cc
diff --git a/chrome/browser/webdata/autofill_profile_syncable_service_unittest.cc b/chrome/browser/webdata/autofill_profile_syncable_service_unittest.cc
index 74a274595a94a9b71ce7e820450c0cb19b77c729..3d1971bbaba9fd2c1a42982e9864a47f551e2260 100644
--- a/chrome/browser/webdata/autofill_profile_syncable_service_unittest.cc
+++ b/chrome/browser/webdata/autofill_profile_syncable_service_unittest.cc
@@ -99,6 +99,8 @@ class MockSyncChangeProcessor : public syncer::SyncChangeProcessor {
   MOCK_METHOD2(ProcessSyncChanges,
                syncer::SyncError(const tracked_objects::Location&,
                                  const syncer::SyncChangeList&));
+  virtual syncer::SyncDataList GetAllSyncData(syncer::ModelType type)
+      const OVERRIDE { return syncer::SyncDataList(); }
 };
 
 class TestSyncChangeProcessor : public syncer::SyncChangeProcessor {
@@ -113,6 +115,11 @@ class TestSyncChangeProcessor : public syncer::SyncChangeProcessor {
     return syncer::SyncError();
   }
 
+  virtual syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const
+      OVERRIDE {
+    return syncer::SyncDataList();
+  }
+
   const syncer::SyncChangeList& changes() { return changes_; }
 
  private: