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_manager.h b/mock_manager.h
index e8f709d..21da55e 100644
--- a/mock_manager.h
+++ b/mock_manager.h
@@ -5,27 +5,19 @@
 #ifndef SHILL_MOCK_MANAGER_
 #define SHILL_MOCK_MANAGER_
 
-#include <base/memory/ref_counted.h>
+#include <base/basictypes.h>
 #include <gmock/gmock.h>
 
 #include "shill/manager.h"
 
 namespace shill {
 
-class ControlInterface;
-class DeviceInfo;
-class EventDispatcher;
-class GLib;
-class PropertyStore;
-
 class MockManager : public Manager {
  public:
   MockManager(ControlInterface *control_interface,
               EventDispatcher *dispatcher,
-              GLib *glib)
-      : Manager(control_interface, dispatcher, glib, "", "", "") {
-  }
-  ~MockManager() {}
+              GLib *glib);
+  virtual ~MockManager();
 
   MOCK_METHOD0(device_info, DeviceInfo*(void));
   MOCK_METHOD0(store, PropertyStore*(void));