Remove deprecated ListValue::Append(Value*) overload on Linux.

chrome/browser/sync/test/integration/preferences_helper.cc

Index: chrome/browser/sync/test/integration/preferences_helper.cc
diff --git a/chrome/browser/sync/test/integration/preferences_helper.cc b/chrome/browser/sync/test/integration/preferences_helper.cc
index f9f7778a12819743c9e3a40660769db55796b4d2..a1f362d07ddd34549d8dafda68801833576aae83 100644
--- a/chrome/browser/sync/test/integration/preferences_helper.cc
+++ b/chrome/browser/sync/test/integration/preferences_helper.cc
@@ -76,7 +76,7 @@ void ChangeListPref(int index,
     for (base::ListValue::const_iterator it = new_value.begin();
          it != new_value.end();
          ++it) {
-      list->Append((*it)->DeepCopy());
+      list->Append((*it)->CreateDeepCopy());
     }
   }
 
@@ -86,7 +86,7 @@ void ChangeListPref(int index,
     for (base::ListValue::const_iterator it = new_value.begin();
          it != new_value.end();
          ++it) {
-      list_verifier->Append((*it)->DeepCopy());
+      list_verifier->Append((*it)->CreateDeepCopy());
     }
   }
 }