Add GetTextDirection to ui::TextInputClient API.

ui/base/ime/text_input_client.h

 // Copyright (c) 2012 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.
 
 #ifndef UI_BASE_IME_TEXT_INPUT_CLIENT_H_
 #define UI_BASE_IME_TEXT_INPUT_CLIENT_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 51 matching lines @@
   // Input context information -------------------------------------------------
 
   // Returns current text input type. It could be changed and even becomes
   // TEXT_INPUT_TYPE_NONE at runtime.
   virtual ui::TextInputType GetTextInputType() const = 0;
 
   // Returns current text input mode. It could be changed and even becomes
   // TEXT_INPUT_MODE_DEFAULT at runtime.
   virtual ui::TextInputMode GetTextInputMode() const = 0;
 
+  // Returns the current text direction.
+  virtual base::i18n::TextDirection GetTextDirection() const = 0;
+
   // Returns the current text input flags, which is a bit map of
   // WebTextInputType defined in blink. This is valid only for web input fileds;
   // it will return TEXT_INPUT_FLAG_NONE for native input fields.
   virtual int GetTextInputFlags() const = 0;
 
   // Returns if the client supports inline composition currently.
   virtual bool CanComposeInline() const = 0;
 
   // Returns current caret (insertion point) bounds in the universal screen
   // coordinates. If there is selection, then the selection bounds will be
@@ skipping 91 matching lines @@
   // This allows a TextInputClient to be informed of a platform-independent edit
   // command that has been derived from the key event currently being dispatched
   // (but not yet sent to the TextInputClient). The edit command will take into
   // account any OS-specific, or user-specified, keybindings that may be set up.
   virtual void SetEditCommandForNextKeyEvent(int command_id) = 0;
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_TEXT_INPUT_CLIENT_H_