Rename KEY_ constants to avoid conflict with <linux/input.h>

ui/events/ozone/layout/keyboard_layout_engine_unittest.cc

 // Copyright 2015 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 "base/strings/stringprintf.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/events/event.h"
 #include "ui/events/event_constants.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/dom/dom_code.h"
@@ skipping 167 matching lines @@
     "modifier_map Mod4{<HYPR>};};};";
 
 void TestLookup(const char* name, KeyboardLayoutEngine* engine) {
   static const struct {
     DomCode input_dom_code;
     int input_flags;
     DomKey::Base output_dom_key;
     KeyboardCode output_keycode;
     base::char16 output_character;
   } kTestCases[] = {
-      {DomCode::KEY_A, EF_NONE, DomKey::Constant<'a'>::Character, VKEY_A, 'a'},
-      {DomCode::KEY_A, EF_SHIFT_DOWN, DomKey::Constant<'A'>::Character, VKEY_A,
+      {DomCode::US_A, EF_NONE, DomKey::Constant<'a'>::Character, VKEY_A, 'a'},
+      {DomCode::US_A, EF_SHIFT_DOWN, DomKey::Constant<'A'>::Character, VKEY_A,
        'A'},
-      {DomCode::KEY_A, EF_CONTROL_DOWN, DomKey::Constant<'a'>::Character,
+      {DomCode::US_A, EF_CONTROL_DOWN, DomKey::Constant<'a'>::Character,
        VKEY_A, 1},
   };
 
   KeyboardLayoutEngineManager::SetKeyboardLayoutEngine(make_scoped_ptr(engine));
 
   for (const auto& t : kTestCases) {
     DomKey dom_key;
     KeyboardCode keycode;
     SCOPED_TRACE(base::StringPrintf(
         "%s(%s, 0x%X)", name,
@@ skipping 16 matching lines @@
   TestLookup("StubKeyboardLayoutEngine", new StubKeyboardLayoutEngine());
 
   XkbEvdevCodes xkb_evdev_code_converter;
   XkbKeyboardLayoutEngine* xkb_engine =
       new XkbKeyboardLayoutEngine(xkb_evdev_code_converter);
   xkb_engine->SetKeymapFromStringForTest(kUsLayoutXkbKeymap);
   TestLookup("XkbKeyboardLayoutEngine", xkb_engine);
 }
 
 }  // namespace ui