Clamp RenderTextWin layout length to 10,000 code points.

ui/base/text/text_elider.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.
 //
 // This file defines utility functions for eliding and formatting UI text.
 
 #ifndef UI_BASE_TEXT_TEXT_ELIDER_H_
 #define UI_BASE_TEXT_TEXT_ELIDER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "third_party/icu/public/common/unicode/uchar.h"
 #include "third_party/icu/public/i18n/unicode/coll.h"
 #include "ui/base/ui_export.h"
 #include "ui/gfx/font.h"
 
 class GURL;
 
 namespace base {
 class FilePath;
 }
 
 namespace ui {
 
 UI_EXPORT extern const char kEllipsis[];
+UI_EXPORT extern const char16 kEllipsisUTF16[];
 
 // Elides a well-formed email address (e.g. username@domain.com) to fit into
 // |available_pixel_width| using the specified |font|.
 // This function guarantees that the string returned will contain at least one
 // character, other than the ellipses, on either side of the '@'. If it is
 // impossible to achieve these requirements: only an ellipsis will be returned.
 // If possible: this elides only the username portion of the |email|. Otherwise,
 // the domain is elided in the middle so that it splits the available width
 // equally with the elided username (should the username be short enough that it
 // doesn't need half the available width: the elided domain will occupy that
@@ skipping 157 matching lines @@
 // Truncates the string to length characters. This breaks the string at
 // the first word break before length, adding the horizontal ellipsis
 // character (unicode character 0x2026) to render ...
 // The supplied string is returned if the string has length characters or
 // less.
 UI_EXPORT string16 TruncateString(const string16& string, size_t length);
 
 }  // namespace ui
 
 #endif  // UI_BASE_TEXT_TEXT_ELIDER_H_