buffet: remove unnecessary NOLINTs and restored some C++11 code

The old cpplint was issuing a lot of false-positives for new C++11
features and I had to either explicitly disable the warning or
work around them (e.g. instead of using uniform initialization,
I used a normal constructor syntax with initializer list inside).

These redundancies are no longer needed since the linter has been
updated.

Also removed some of auto&& from loops because the new
cpplint complains about RValue references.

BUG=None
TEST=Unit tests still pass.

Change-Id: Ibe9538e3e1cb793be807a23e82627444e663934c
Reviewed-on: https://chromium-review.googlesource.com/203797
Tested-by: Alex Vakulenko <avakulenko@chromium.org>
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Commit-Queue: Alex Vakulenko <avakulenko@chromium.org>
diff --git a/buffet/exported_property_set.h b/buffet/exported_property_set.h
index 405ed7d..d91415f 100644
--- a/buffet/exported_property_set.h
+++ b/buffet/exported_property_set.h
@@ -173,7 +173,7 @@
 
  private:
   OnUpdateCallback on_update_;
-  T value_{};  // NOLINT - initializer list
+  T value_{};
 
   DISALLOW_COPY_AND_ASSIGN(ExportedProperty);
 };