Gamepad API support for chrome on android

content/browser/gamepad/canonical_button_index_list.h

Index: content/browser/gamepad/canonical_button_index_list.h
diff --git a/content/browser/gamepad/canonical_button_index_list.h b/content/browser/gamepad/canonical_button_index_list.h
new file mode 100644
index 0000000000000000000000000000000000000000..20d3c576fe4326ccab0f677b0516ca6fddc24711
--- /dev/null
+++ b/content/browser/gamepad/canonical_button_index_list.h
@@ -0,0 +1,26 @@
+// 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 defines the canonical button mapping order for gamepad-like devices.
+
+CANONICAL_BUTTON_INDEX(BUTTON_PRIMARY, 0)
+CANONICAL_BUTTON_INDEX(BUTTON_SECONDARY, 1)
+CANONICAL_BUTTON_INDEX(BUTTON_TERTIARY, 2)
+CANONICAL_BUTTON_INDEX(BUTTON_QUATERNARY, 3)
+CANONICAL_BUTTON_INDEX(BUTTON_LEFT_SHOULDER, 4)
+CANONICAL_BUTTON_INDEX(BUTTON_RIGHT_SHOULDER, 5)
+CANONICAL_BUTTON_INDEX(BUTTON_LEFT_TRIGGER, 6)
+CANONICAL_BUTTON_INDEX(BUTTON_RIGHT_TRIGGER, 7)
+CANONICAL_BUTTON_INDEX(BUTTON_BACK_SELECT, 8)
+CANONICAL_BUTTON_INDEX(BUTTON_START, 9)
+CANONICAL_BUTTON_INDEX(BUTTON_LEFT_THUMBSTICK, 10)
+CANONICAL_BUTTON_INDEX(BUTTON_RIGHT_THUMBSTICK, 11)
+CANONICAL_BUTTON_INDEX(BUTTON_DPAD_UP, 12)
+CANONICAL_BUTTON_INDEX(BUTTON_DPAD_DOWN, 13)
+CANONICAL_BUTTON_INDEX(BUTTON_DPAD_LEFT, 14)
+CANONICAL_BUTTON_INDEX(BUTTON_DPAD_RIGHT, 15)
+CANONICAL_BUTTON_INDEX(BUTTON_META, 16)
+CANONICAL_BUTTON_INDEX(NUM_CANONICAL_BUTTONS, 17)