Move functions for controlling Caps Lock to CapsLockDelegate from SystemTrayDelegate.

ash/caps_lock_delegate_stub.cc

Index: ash/caps_lock_delegate_stub.cc
diff --git a/ash/caps_lock_delegate_stub.cc b/ash/caps_lock_delegate_stub.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8dc61cffef065070f7977c34feeea6eab841f444
--- /dev/null
+++ b/ash/caps_lock_delegate_stub.cc
@@ -0,0 +1,26 @@
+// Copyright (c) 2012 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 "ash/caps_lock_delegate_stub.h"
+
+namespace ash {
+
+CapsLockDelegateStub::CapsLockDelegateStub()
+    : enabled_(false) {}
+
+CapsLockDelegateStub::~CapsLockDelegateStub() {}
+
+bool CapsLockDelegateStub::IsCapsLockEnabled() const {
+  return enabled_;
+}
+
+void CapsLockDelegateStub::SetCapsLockEnabled(bool enabled) {
+  enabled_ = enabled;
+}
+
+void CapsLockDelegateStub::ToggleCapsLock() {
+  enabled_ = !enabled_;
+}
+
+}  // namespace ash