sync: Add GetAllSyncData to sync/api

chrome/browser/extensions/api/storage/settings_apitest.cc

Index: chrome/browser/extensions/api/storage/settings_apitest.cc
diff --git a/chrome/browser/extensions/api/storage/settings_apitest.cc b/chrome/browser/extensions/api/storage/settings_apitest.cc
index df8feb9972aebbb115c9cba02a068bf6e72d8ca6..c687d6f39c52fedaf0a2c3cdea8587bfcebcb56c 100644
--- a/chrome/browser/extensions/api/storage/settings_apitest.cc
+++ b/chrome/browser/extensions/api/storage/settings_apitest.cc
@@ -65,6 +65,11 @@ class NoopSyncChangeProcessor : public syncer::SyncChangeProcessor {
     return syncer::SyncError();
   }
 
+  virtual syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const
+      OVERRIDE {
+    return syncer::SyncDataList();
+  }
+
   virtual ~NoopSyncChangeProcessor() {};
 };
 
@@ -83,6 +88,11 @@ class SyncChangeProcessorDelegate : public syncer::SyncChangeProcessor {
     return recipient_->ProcessSyncChanges(from_here, change_list);
   }
 
+  virtual syncer::SyncDataList GetAllSyncData(syncer::ModelType type) const
+      OVERRIDE {
+    return recipient_->GetAllSyncData(type);
+  }
+
  private:
   // The recipient of all sync changes.
   syncer::SyncChangeProcessor* recipient_;