Add GetTextDirection to ui::TextInputClient API.

ui/views/controls/textfield/textfield.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_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_
 #define UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 70 matching lines @@
   // new text's range, or moves the cursor to the end if the cursor is
   // out of the new text's range.
   void SetText(const base::string16& new_text);
 
   // Appends the given string to the previously-existing text in the field.
   void AppendText(const base::string16& new_text);
 
   // Inserts |new_text| at the cursor position, replacing any selected text.
   void InsertOrReplaceText(const base::string16& new_text);
 
-  // Returns the text direction.
-  base::i18n::TextDirection GetTextDirection() const;
-
   // Returns the text that is currently selected.
   base::string16 GetSelectedText() const;
 
   // Select the entire text range. If |reversed| is true, the range will end at
   // the logical beginning of the text; this generally shows the leading portion
   // of text that overflows its display area.
   void SelectAll(bool reversed);
 
   // A convenience method to select the word closest to |point|.
   void SelectWordAt(const gfx::Point& point);
@@ skipping 177 matching lines @@
   void ExecuteCommand(int command_id, int event_flags) override;
 
   // ui::TextInputClient overrides:
   void SetCompositionText(const ui::CompositionText& composition) override;
   void ConfirmCompositionText() override;
   void ClearCompositionText() override;
   void InsertText(const base::string16& text) override;
   void InsertChar(const ui::KeyEvent& event) override;
   ui::TextInputType GetTextInputType() const override;
   ui::TextInputMode GetTextInputMode() const override;
+  base::i18n::TextDirection GetTextDirection() const override;
   int GetTextInputFlags() const override;
   bool CanComposeInline() const override;
   gfx::Rect GetCaretBounds() const override;
   bool GetCompositionCharacterBounds(uint32_t index,
                                      gfx::Rect* rect) const override;
   bool HasCompositionText() const override;
   bool GetTextRange(gfx::Range* range) const override;
   bool GetCompositionTextRange(gfx::Range* range) const override;
   bool GetSelectionRange(gfx::Range* range) const override;
   bool SetSelectionRange(const gfx::Range& range) override;
@@ skipping 183 matching lines @@
 
   // Used to bind callback functions to this object.
   base::WeakPtrFactory<Textfield> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Textfield);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_