Separate debug shortcuts into another array in ash accelerator table.

ash/accelerators/accelerator_table.h

Index: ash/accelerators/accelerator_table.h
diff --git a/ash/accelerators/accelerator_table.h b/ash/accelerators/accelerator_table.h
index 38c9f08fefbaa9be2105167100e30e82a8ed74d4..29b85167b38fdc36a1f43fcbf563efd2985aa30d 100644
--- a/ash/accelerators/accelerator_table.h
+++ b/ash/accelerators/accelerator_table.h
@@ -96,6 +96,13 @@ ASH_EXPORT extern const AcceleratorData kAcceleratorData[];
 // The number of elements in kAcceleratorData.
 ASH_EXPORT extern const size_t kAcceleratorDataLength;
 
+// Debug accelerators enabled only when "Debugging keyboard shortcuts" flag
+// (--ash-debug-shortcuts) is enabled.
+ASH_EXPORT extern const AcceleratorData kDebugAcceleratorData[];
+
+// The number of elements in kDebugAcceleratorData.
+ASH_EXPORT extern const size_t kDebugAcceleratorDataLength;
+
 // Actions that should be handled very early in Ash unless the current target
 // window is full-screen.
 ASH_EXPORT extern const AcceleratorAction kReservedActions[];