Implemented SetSelection for the Web content on Windows.

content/browser/accessibility/browser_accessibility.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.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 1144 matching lines @@
 
   return name;
 }
 
 std::vector<int> BrowserAccessibility::GetLineStartOffsets() const {
   if (!instance_active())
     return std::vector<int>();
   return node()->GetOrComputeLineStartOffsets();
 }
 
+BrowserAccessibility::AXPlatformPositionInstance
+BrowserAccessibility::CreatePositionAt(int offset) const {
+  DCHECK(manager_);
+  return AXPlatformPosition::CreateTextPosition(
+      manager_->ax_tree_id(), GetId(), offset, ui::AX_TEXT_AFFINITY_DOWNSTREAM);
+}
+
 base::string16 BrowserAccessibility::GetInnerText() const {
   if (IsTextOnlyObject())
     return GetString16Attribute(ui::AX_ATTR_NAME);
 
   base::string16 text;
   for (size_t i = 0; i < InternalChildCount(); ++i)
     text += InternalGetChild(i)->GetInnerText();
   return text;
 }
 
@@ skipping 56 matching lines @@
       }
     }
 
     node = container;
   }
 
   return gfx::ToEnclosingRect(bounds);
 }
 
 }  // namespace content