Switch to using base/constructormagic.h and remove system_wrappers/interface/constructor_magic.h.

Same as https://webrtc-codereview.appspot.com/19519004. The issue in
http://chromegw.corp.google.com/i/internal.chromium.webrtc.fyi/builders/Linux...
is solved by this change
http://src.chromium.org/viewvc/chrome/trunk/src/third_party/libjingle/libjing...
(tested locally).

BUG=3380
R=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/17619005

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@6218 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/modules/audio_coding/neteq4/neteq_impl.h b/modules/audio_coding/neteq4/neteq_impl.h
index b8139ac..9b155fe 100644
--- a/modules/audio_coding/neteq4/neteq_impl.h
+++ b/modules/audio_coding/neteq4/neteq_impl.h
@@ -13,6 +13,7 @@
 
 #include <vector>
 
+#include "webrtc/base/constructormagic.h"
 #include "webrtc/modules/audio_coding/neteq4/audio_multi_vector.h"
 #include "webrtc/modules/audio_coding/neteq4/defines.h"
 #include "webrtc/modules/audio_coding/neteq4/interface/neteq.h"
@@ -20,7 +21,6 @@
 #include "webrtc/modules/audio_coding/neteq4/random_vector.h"
 #include "webrtc/modules/audio_coding/neteq4/rtcp.h"
 #include "webrtc/modules/audio_coding/neteq4/statistics_calculator.h"
-#include "webrtc/system_wrappers/interface/constructor_magic.h"
 #include "webrtc/system_wrappers/interface/scoped_ptr.h"
 #include "webrtc/system_wrappers/interface/thread_annotations.h"
 #include "webrtc/typedefs.h"