chromeos: Fix interface nits.

This fixes some nits from r160698 and r161159.

BUG=none
TBR=tfarina@chromium.org

Review URL: https://chromiumcodereview.appspot.com/11091051

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@161239 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/contacts/contact_database.h

@@ -42,8 +42,6 @@ class ContactDatabaseInterface {
                               scoped_ptr<UpdateMetadata>)>
       LoadCallback;
 
-  ContactDatabaseInterface() {}
-
   // Asynchronously destroys the object after all in-progress file operations
   // have completed.
   virtual void DestroyOnUIThread() {}
@@ -70,9 +68,6 @@ class ContactDatabaseInterface {
 
  protected:
   virtual ~ContactDatabaseInterface() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ContactDatabaseInterface);
 };
 
 class ContactDatabase : public ContactDatabaseInterface {

chromeos/dbus/dbus_thread_manager_observer.h

@@ -5,8 +5,6 @@
 #ifndef CHROMEOS_DBUS_DBUS_THREAD_MANAGER_OBSERVER_H_
 #define CHROMEOS_DBUS_DBUS_THREAD_MANAGER_OBSERVER_H_
 
-#include "base/basictypes.h"
-
 namespace chromeos {
 
 class DBusThreadManager;
@@ -15,15 +13,12 @@ class DBusThreadManager;
 // DBusThreadManager.
 class DBusThreadManagerObserver {
  public:
-  DBusThreadManagerObserver() {}
-  virtual ~DBusThreadManagerObserver() {}
-
   // Called when |manager| is about to be destroyed.  |manager| is still usable
   // at this point.
   virtual void OnDBusThreadManagerDestroying(DBusThreadManager* manager) = 0;
 
- private:
-  DISALLOW_COPY_AND_ASSIGN(DBusThreadManagerObserver);
+ protected:
+  virtual ~DBusThreadManagerObserver() {}
 };
 
 }  // namespace chromeos