Correctly finds line boundaries in objects with rich text on Windows.

content/browser/accessibility/browser_accessibility_win.cc

 // 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.
 
 #include "content/browser/accessibility/browser_accessibility_win.h"
 
 #include <UIAutomationClient.h>
 #include <UIAutomationCoreApi.h>
 
 #include <algorithm>
@@ skipping 4228 matching lines @@
 }
 
 LONG BrowserAccessibilityWin::FindBoundary(
     const base::string16& text,
     IA2TextBoundaryType ia2_boundary,
     LONG start_offset,
     ui::TextBoundaryDirection direction) {
   HandleSpecialTextOffset(text, &start_offset);
   if (ia2_boundary == IA2_TEXT_BOUNDARY_WORD)
     return GetWordStartBoundary(static_cast<int>(start_offset), direction);
+  if (ia2_boundary == IA2_TEXT_BOUNDARY_LINE)
+    return GetLineStartBoundary(static_cast<int>(start_offset), direction);
 
   ui::TextBoundaryType boundary = IA2TextBoundaryToTextBoundary(ia2_boundary);
   const std::vector<int32_t>& line_breaks =
       GetIntListAttribute(ui::AX_ATTR_LINE_BREAKS);
   return ui::FindAccessibleTextBoundary(
       text, line_breaks, boundary, start_offset, direction);
 }
 
 LONG BrowserAccessibilityWin::FindStartOfStyle(
     LONG start_offset,
@@ skipping 695 matching lines @@
   return static_cast<BrowserAccessibilityWin*>(obj);
 }
 
 const BrowserAccessibilityWin*
 ToBrowserAccessibilityWin(const BrowserAccessibility* obj) {
   DCHECK(!obj || obj->IsNative());
   return static_cast<const BrowserAccessibilityWin*>(obj);
 }
 
 }  // namespace content