Fix for Ash shortcuts unexpectedly working in system model dialog

ash/accelerators/accelerator_table_unittest.cc

 // 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 <set>
 
 #include "base/basictypes.h"
 #include "ash/accelerators/accelerator_table.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 40 matching lines @@
   for (size_t i = 0; i < kActionsAllowedAtLoginOrLockScreenLength; ++i) {
     EXPECT_TRUE(actions.insert(kActionsAllowedAtLoginOrLockScreen[i]).second)
         << "Duplicated action: " << kActionsAllowedAtLoginOrLockScreen[i];
   }
   for (size_t i = 0; i < kActionsAllowedAtLockScreenLength; ++i) {
     EXPECT_TRUE(actions.insert(kActionsAllowedAtLockScreen[i]).second)
         << "Duplicated action: " << kActionsAllowedAtLockScreen[i];
   }
 }
 
+TEST(AcceleratorTableTest, CheckDuplicatedActionsAllowedAtModalWindow) {
+  std::set<AcceleratorAction> actions;
+  for (size_t i = 0; i < kActionsAllowedAtModalWindowLength; ++i) {
+    EXPECT_TRUE(actions.insert(kActionsAllowedAtModalWindow[i]).second)
+        << "Duplicated action: " << kActionsAllowedAtModalWindow[i]
+        << " at index: " << i;
+  }
+}
+
 }  // namespace ash