Use the new java_cpp_enum rule in content.

content/browser/gamepad/canonical_axis_index_list.h

Index: content/browser/gamepad/canonical_axis_index_list.h
diff --git a/content/browser/gamepad/canonical_axis_index_list.h b/content/browser/gamepad/canonical_axis_index_list.h
deleted file mode 100644
index 58b85a6e18928e212d28bdafa6dd03cdb24a33e6..0000000000000000000000000000000000000000
--- a/content/browser/gamepad/canonical_axis_index_list.h
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2014 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.
-
-// This file intentionally does not have header guards, it's included
-// inside a macro to generate enum values.
-
-// This file defines the canonical axes mapping order for gamepad-like devices.
-
-// TODO(SaurabhK): Consolidate with CanonicalAxisIndex enum in
-// gamepad_standard_mappings.h, crbug.com/351558.
-CANONICAL_AXIS_INDEX(AXIS_LEFT_STICK_X, 0)
-CANONICAL_AXIS_INDEX(AXIS_LEFT_STICK_Y, 1)
-CANONICAL_AXIS_INDEX(AXIS_RIGHT_STICK_X, 2)
-CANONICAL_AXIS_INDEX(AXIS_RIGHT_STICK_Y, 3)
-CANONICAL_AXIS_INDEX(NUM_CANONICAL_AXES, 4)