shill: Move remaining mock constructors/destructors to .cc.

Non-scientific experiment of 'FEATURES=test emerge-x86-mario -1 shill' shows
real time reduction from 77 seconds to 59 seconds.

BUG=chromium-os:19691
TEST=unit tests

Change-Id: Iba905587cce64648bebc69d03fe9ecb3a3a8b90e
Reviewed-on: http://gerrit.chromium.org/gerrit/6793
Tested-by: Darin Petkov <petkov@chromium.org>
Reviewed-by: mukesh agrawal <quiche@chromium.org>
diff --git a/modem_cdma_proxy_interface.h b/modem_cdma_proxy_interface.h
index 7a333a9..249b7c4 100644
--- a/modem_cdma_proxy_interface.h
+++ b/modem_cdma_proxy_interface.h
@@ -9,6 +9,8 @@
 
 #include <base/basictypes.h>
 
+#include "shill/dbus_properties.h"
+
 namespace shill {
 
 // These are the methods that a ModemManager.Modem.CDMA proxy must support. The