Fixed a bug that assumed that static text object span only one line

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 2119 matching lines @@
   // boundary type, we can just let the screenreader handle it.
   if (boundary_type == IA2_TEXT_BOUNDARY_SENTENCE) {
     *start_offset = 0;
     *end_offset = 0;
     *text = NULL;
     return S_FALSE;
   }
 
   // According to the IA2 Spec, only line boundaries should succeed when
   // the offset is one past the end of the text.
-  if (offset == text_len && boundary_type != IA2_TEXT_BOUNDARY_LINE) {
-    *start_offset = 0;
-    *end_offset = 0;
-    *text = nullptr;
-    return S_FALSE;
+  if (offset == text_len) {
+    if (boundary_type == IA2_TEXT_BOUNDARY_LINE) {
+      --offset;
+    } else {
+      *start_offset = 0;
+      *end_offset = 0;
+      *text = nullptr;
+      return S_FALSE;
+    }
   }
 
   *start_offset = FindBoundary(
       text_str, boundary_type, offset, ui::BACKWARDS_DIRECTION);
   *end_offset = FindBoundary(
       text_str, boundary_type, offset, ui::FORWARDS_DIRECTION);
   return get_text(*start_offset, *end_offset, text);
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_textBeforeOffset(
@@ skipping 2808 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