arc: Use the active keyboard layout to get KeyboardCode.

In order to interpret the DomCode sent from ARC++ correctly,
the serializer should use the active keyboard layout instead of assming
the US keyboard layout always.

Bug: b:174259561
Change-Id: Ibf40ec446afa8c732ea8e8d77fce798b54bd0dab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2596668Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
Commit-Queue: Yuichiro Hanada <yhanada@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844058}

components/arc/mojom/BUILD.gn

@@ -391,6 +391,7 @@ if (is_chromeos_ash) {
       ":mojom",
       "//ui/base/ime:text_input_types",
       "//ui/events",
+      "//ui/events/ozone/layout",
     ]
   }
 

components/arc/mojom/ime_mojom_traits.cc

@@ -7,6 +7,8 @@
 #include "ui/events/keycodes/dom/dom_code.h"
 #include "ui/events/keycodes/dom/keycode_converter.h"
 #include "ui/events/keycodes/keyboard_code_conversion.h"
+#include "ui/events/ozone/layout/keyboard_layout_engine.h"
+#include "ui/events/ozone/layout/keyboard_layout_engine_manager.h"
 
 namespace mojo {
 using KeyEventUniquePtr = std::unique_ptr<ui::KeyEvent>;
@@ -38,8 +40,10 @@ bool StructTraits<arc::mojom::KeyEventDataDataView, KeyEventUniquePtr>::Read(
 
   ui::KeyboardCode key_code;
   ui::DomKey dom_key;
-  if (!DomCodeToUsLayoutDomKey(dom_code, flags, &dom_key, &key_code))
+  if (!ui::KeyboardLayoutEngineManager::GetKeyboardLayoutEngine()->Lookup(
+          dom_code, flags, &dom_key, &key_code)) {
     return false;
+  }
 
   *out = std::make_unique<ui::KeyEvent>(type, key_code, dom_code, flags,
                                         dom_key, base::TimeTicks::Now());