Split part of about_handler into chrome/common to break the browser-renderer ...

chrome/common/about_handler.h

+// Copyright (c) 2010 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 CHROME_COMMON_ABOUT_HANDLER_H__
+#define CHROME_COMMON_ABOUT_HANDLER_H__
+
+#include "chrome/common/url_constants.h"
+#include "googleurl/src/gurl.h"
+
+namespace chrome_about_handler {
+
+extern const char* const about_urls[];
+extern const size_t about_urls_size;  // Only used for testing
+extern const char* const kAboutScheme;
+
+// Returns true if the URL is one that AboutHandler will handle when
+// AboutHandler::MaybeHandle is called.
+bool WillHandle(const GURL& url);
+
+}  // namespace chrome_about_handler
+
+#endif  // CHROME_COMMON_ABOUT_HANDLER_H__