cros: Remove the unneed default ctor from ScreenLockLibrary interface.

chrome/browser/chromeos/cros/screen_lock_library.cc

Index: chrome/browser/chromeos/cros/screen_lock_library.cc
diff --git a/chrome/browser/chromeos/cros/screen_lock_library.cc b/chrome/browser/chromeos/cros/screen_lock_library.cc
index a63f11a9e93a22035034fb29ebed7b0c20564c85..a0f79b6a46a4c02343f4e5daf0fed98e694ab978 100644
--- a/chrome/browser/chromeos/cros/screen_lock_library.cc
+++ b/chrome/browser/chromeos/cros/screen_lock_library.cc
@@ -1,29 +1,28 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/cros/screen_lock_library.h"
 
+#include "base/basictypes.h"
 #include "base/message_loop.h"
-#include "base/string_util.h"
+#include "base/observer_list.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "content/browser/browser_thread.h"
+#include "third_party/cros/chromeos_screen_lock.h"
 
 namespace chromeos {
 
-// This class handles the interaction with the ChromeOS screen lock APIs.
 class ScreenLockLibraryImpl : public ScreenLockLibrary {
  public:
   ScreenLockLibraryImpl() {
-    if (CrosLibrary::Get()->EnsureLoaded()) {
+    if (CrosLibrary::Get()->EnsureLoaded())
       Init();
-    }
   }
 
   ~ScreenLockLibraryImpl() {
-    if (screen_lock_connection_) {
+    if (screen_lock_connection_)
       chromeos::DisconnectScreenLock(screen_lock_connection_);

[tfarina, 2011/07/28 00:10:52]

After disconnecting, the PowerLibraryImpl sets its power_status_connection_ to
NULL. Shouldn't we do the same here?

-    }
   }
 
   void AddObserver(Observer* observer) {
@@ -52,8 +51,8 @@ class ScreenLockLibraryImpl : public ScreenLockLibrary {
 
  private:
   void Init() {
-    screen_lock_connection_ = chromeos::MonitorScreenLock(
-        &ScreenLockedHandler, this);
+    screen_lock_connection_ =
+        chromeos::MonitorScreenLock(&ScreenLockedHandler, this);
   }
 
   void LockScreen() {