It is time.

ui/accessibility/ax_text_utils.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_ACCESSIBILITY_AX_TEXT_UTILS_H_
-#define UI_ACCESSIBILITY_AX_TEXT_UTILS_H_
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/strings/string16.h"
-#include "ui/accessibility/ax_export.h"
-
-namespace ui {
-
-// Boundaries that can be passed to FindAccessibleTextBoundary,
-// representing various visual boundaries in (potentially multi-line)
-// text. This is used by assistive technology in order to, for example,
-// retrieve the nearest word to the cursor, or retrieve all of the
-// text from the current cursor position to the end of the line.
-// These should be self-explanatory; "line" here refers to the visual
-// line as currently displayed (possibly affected by wrapping).
-enum TextBoundaryType {
-  CHAR_BOUNDARY,
-  WORD_BOUNDARY,
-  LINE_BOUNDARY,
-  SENTENCE_BOUNDARY,
-  PARAGRAPH_BOUNDARY,
-  ALL_BOUNDARY
-};
-
-// A direction when searching for the next boundary.
-enum TextBoundaryDirection {
-  // Search forwards for the next boundary past the starting position.
-  FORWARDS_DIRECTION,
-  // Search backwards for the previous boundary before the starting position.
-  BACKWARDS_DIRECTION
-};
-
-// Convenience method needed to implement platform-specific text
-// accessibility APIs like IAccessible2. Search forwards or backwards
-// (depending on |direction|) from the given |start_offset| until the
-// given boundary is found, and return the offset of that boundary,
-// using the vector of line break character offsets in |line_breaks|.
-size_t AX_EXPORT
-    FindAccessibleTextBoundary(const base::string16& text,
-                               const std::vector<int>& line_breaks,
-                               TextBoundaryType boundary,
-                               size_t start_offset,
-                               TextBoundaryDirection direction);
-
-}  // namespace ui
-
-#endif  // UI_ACCESSIBILITY_AX_TEXT_UTILS_H_