Convert Pass()→std::move() in //chrome/browser/extensions

☃

BUG=557422
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Review URL: https://codereview.chromium.org/1549233002

Cr-Commit-Position: refs/heads/master@{#366911}
diff --git a/chrome/browser/extensions/extension_sync_data.cc b/chrome/browser/extensions/extension_sync_data.cc
index 70ccc91..1fc56d45 100644
--- a/chrome/browser/extensions/extension_sync_data.cc
+++ b/chrome/browser/extensions/extension_sync_data.cc
@@ -141,7 +141,7 @@
     const syncer::SyncData& sync_data) {
   scoped_ptr<ExtensionSyncData> data(new ExtensionSyncData);
   if (data->PopulateFromSyncData(sync_data))
-    return data.Pass();
+    return data;
   return nullptr;
 }
 
@@ -155,7 +155,7 @@
 
   if (sync_change.change_type() == syncer::SyncChange::ACTION_DELETE)
     data->uninstalled_ = true;
-  return data.Pass();
+  return data;
 }
 
 syncer::SyncData ExtensionSyncData::GetSyncData() const {