Fix for Ash shortcuts unexpectedly working in system model dialog

ash/accelerators/accelerator_table_unittest.cc

Index: ash/accelerators/accelerator_table_unittest.cc
diff --git a/ash/accelerators/accelerator_table_unittest.cc b/ash/accelerators/accelerator_table_unittest.cc
index 8ec06459854196d721b3d04fee6a7ba69ea6f750..6467a9b4faacbc96872ec7ba50556c016cc8dc07 100644
--- a/ash/accelerators/accelerator_table_unittest.cc
+++ b/ash/accelerators/accelerator_table_unittest.cc
@@ -58,4 +58,13 @@ TEST(AcceleratorTableTest, CheckDuplicatedActionsAllowedAtLoginOrLockScreen) {
   }
 }
 
+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