Add and specify Views::Textfield::SelectAll |reversed| flag, etc.

ui/gfx/render_text.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_GFX_RENDER_TEXT_H_
 #define UI_GFX_RENDER_TEXT_H_
 
 #include <algorithm>
 #include <cstring>
 #include <string>
@@ skipping 208 matching lines @@
   // Set the selection_model_ based on |range|.
   // If the |range| start or end is greater than text length, it is modified
   // to be the text length.
   // If the |range| start or end is not a cursorable position (not on grapheme
   // boundary), it is a NO-OP and returns false. Otherwise, returns true.
   bool SelectRange(const ui::Range& range);
 
   // Returns true if the local point is over selected text.
   bool IsPointInSelection(const Point& point);
 
-  // Selects no text, all text, or the word at the current cursor position.
+  // Selects no text, keeping the current cursor position and caret affinity.
   void ClearSelection();
-  void SelectAll();
+
+  // 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);
+
+  // Selects the word at the current cursor position.
   void SelectWord();
 
   const ui::Range& GetCompositionRange() const;
   void SetCompositionRange(const ui::Range& composition_range);
 
   // Apply |style_range| to the internal style model.
   void ApplyStyleRange(const StyleRange& style_range);
 
   // Apply |default_style_| over the entire text range.
   void ApplyDefaultStyle();
@@ skipping 260 matching lines @@
 
   // Text shadows to be drawn.
   ShadowValues text_shadows_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderText);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_RENDER_TEXT_H_