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/mock_modem_manager_proxy.h b/mock_modem_manager_proxy.h
index 0810a8d..621b448 100644
--- a/mock_modem_manager_proxy.h
+++ b/mock_modem_manager_proxy.h
@@ -5,6 +5,7 @@
 #ifndef SHILL_MOCK_MODEM_MANAGER_PROXY_H_
 #define SHILL_MOCK_MODEM_MANAGER_PROXY_H_
 
+#include <base/basictypes.h>
 #include <gmock/gmock.h>
 
 #include "shill/modem_manager_proxy_interface.h"
@@ -13,7 +14,13 @@
 
 class MockModemManagerProxy : public ModemManagerProxyInterface {
  public:
+  MockModemManagerProxy();
+  virtual ~MockModemManagerProxy();
+
   MOCK_METHOD0(EnumerateDevices, std::vector<DBus::Path>());
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockModemManagerProxy);
 };
 
 }  // namespace shill