Move a bunch of code in content\common (as well as a few left in renderer) to the content namespace.

content/common/database_util.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_COMMON_DATABASE_UTIL_H_
 #define CONTENT_COMMON_DATABASE_UTIL_H_
 
 #include "webkit/glue/webkitplatformsupport_impl.h"
 
+namespace content {
 // A class of utility functions used by RendererWebKitPlatformSupportImpl and
 // WorkerWebKitPlatformSupportImpl to handle database file accesses.
 class DatabaseUtil {
  public:
   static WebKit::WebKitPlatformSupport::FileHandle DatabaseOpenFile(
       const WebKit::WebString& vfs_file_name, int desired_flags);
   static int DatabaseDeleteFile(
       const WebKit::WebString& vfs_file_name, bool sync_dir);
   static long DatabaseGetFileAttributes(
       const WebKit::WebString& vfs_file_name);
   static long long DatabaseGetFileSize(
       const WebKit::WebString& vfs_file_name);
   static long long DatabaseGetSpaceAvailable(
       const WebKit::WebString& origin_identifier);
 };
 
+}  // namespace content
+
 #endif  // CONTENT_COMMON_DATABASE_UTIL_H_