Refactor all accessibility code out of webkit/glue.

content/renderer/accessibility_node_serializer.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 CONTENT_RENDERER_ACCESSIBILITY_NODE_SERIALIZER_H_
+#define CONTENT_RENDERER_ACCESSIBILITY_NODE_SERIALIZER_H_
+#pragma once
+
+#include "content/common/accessibility_node_data.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebAccessibilityObject.h"
+
+namespace content {
+
+class AccessibilityNodeSerializer {

[jam, 2012/06/12 00:00:42]

nit: why a class instead of just having this be
content::SerializeAccessibilityNode?

[dmazzoni, 2012/06/12 18:35:33]

Mainly to encapsulate the enums, so I'm fine with making this a global function.
Done.

+ public:
+  enum IncludeChildren {

[jam, 2012/06/12 00:00:42]

nit: i realize you're just moving this, and in WebKit enums are used for
booleans. but in chrome this isn't the convention, and the function below looks
just as readable to me as 

 26    static void Serialize(const WebKit::WebAccessibilityObject& src,
 27                         AccessibilityNodeData* dst,
 28                         bool include_children,
 29                         bool include_line_breaks);

[dmazzoni, 2012/06/12 18:35:33]

The style guide specifically suggests using enums instead of booleans, in
particular when there are multiple boolean arguments to the same function and
it'd be easy to get them mixed up.

http://dev.chromium.org/developers/coding-style#Code_Formatting

However, in this case it turns out we're not using include_line_breaks anymore,
so I got rid of that argument and switched include_children to a bool.

[jam, 2012/06/12 21:01:52]

That's the first time I hear this, and this change wasn't discussed publicly as
far as I can tell. I'll start another thread about this.

+    NO_CHILDREN,
+    INCLUDE_CHILDREN
+  };
+
+  enum IncludeLineBreaks {
+    NO_LINE_BREAKS,
+    INCLUDE_LINE_BREAKS
+  };
+
+  static void Serialize(const WebKit::WebAccessibilityObject& src,
+                        AccessibilityNodeData* dst,
+                        IncludeChildren include_children,
+                        IncludeLineBreaks include_line_breaks);
+
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_ACCESSIBILITY_NODE_SERIALIZER_H_