Add GetTextDirection to ui::TextInputClient API.

components/arc/ime/arc_ime_service.cc

 // Copyright 2016 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 "components/arc/ime/arc_ime_service.h"
 
 #include "base/logging.h"
 #include "components/arc/ime/arc_ime_bridge_impl.h"
 #include "components/exo/shell_surface.h"
 #include "components/exo/surface.h"
@@ skipping 216 matching lines @@
 
   // Add the offset of the window showing the ARC app.
   converted.Offset(window->GetBoundsInScreen().OffsetFromOrigin());
   return converted;
 }
 
 ui::TextInputMode ArcImeService::GetTextInputMode() const {
   return ui::TEXT_INPUT_MODE_DEFAULT;
 }
 
+base::i18n::TextDirection ArcImeService::GetTextDirection() const {
+  return base::i18n::UNKNOWN_DIRECTION;
+}
+
 int ArcImeService::GetTextInputFlags() const {
   return ui::TEXT_INPUT_FLAG_NONE;
 }
 
 bool ArcImeService::CanComposeInline() const {
   return true;
 }
 
 bool ArcImeService::GetCompositionCharacterBounds(
     uint32_t index, gfx::Rect* rect) const {
@@ skipping 32 matching lines @@
 bool ArcImeService::ChangeTextDirectionAndLayoutAlignment(
     base::i18n::TextDirection direction) {
   return false;
 }
 
 bool ArcImeService::IsEditCommandEnabled(int command_id) {
   return false;
 }
 
 }  // namespace arc