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

content/common/fileapi/webfilewriter_impl.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_FILEAPI_WEBFILEWRITER_IMPL_H_
 #define CONTENT_COMMON_FILEAPI_WEBFILEWRITER_IMPL_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "webkit/fileapi/webfilewriter_base.h"
 
+namespace content {
+
 // An implementation of WebFileWriter for use in chrome renderers and workers.
 class WebFileWriterImpl : public fileapi::WebFileWriterBase,
                           public base::SupportsWeakPtr<WebFileWriterImpl> {
  public:
   WebFileWriterImpl(const GURL& path, WebKit::WebFileWriterClient* client);
   virtual ~WebFileWriterImpl();
 
  protected:
   // WebFileWriterBase overrides
   virtual void DoTruncate(const GURL& path, int64 offset) OVERRIDE;
   virtual void DoWrite(const GURL& path, const GURL& blob_url,
                        int64 offset) OVERRIDE;
   virtual void DoCancel() OVERRIDE;
 
  private:
   class CallbackDispatcher;
   int request_id_;
 };
 
+}  // namespace content
+
 #endif  // CONTENT_COMMON_FILEAPI_WEBFILEWRITER_IMPL_H_