Move NPAPI implementation out of webkit/plugins/npapi and into content.

webkit/plugins/npapi/plugin_host.h

-// Copyright (c) 2011 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.
-
-// TODO: Need mechanism to cleanup the static instance
-
-#ifndef WEBKIT_PLUGINS_NPAPI_PLUGIN_HOST_H_
-#define WEBKIT_PLUGINS_NPAPI_PLUGIN_HOST_H_
-
-#include <string>
-#include <vector>
-
-#include "base/memory/ref_counted.h"
-#include "third_party/npapi/bindings/npapi.h"
-#include "third_party/npapi/bindings/nphostapi.h"
-#include "webkit/plugins/webkit_plugins_export.h"
-
-namespace webkit {
-namespace npapi {
-
-// The Plugin Host implements the NPN_xxx functions for NPAPI plugins.
-// These are the functions exposed from the Plugin Host for use
-// by the Plugin.
-//
-// The PluginHost is managed as a singleton.  This isn't strictly
-// necessary, but since the callback functions are all global C
-// functions, there is really no point in having per-instance PluginHosts.
-class PluginHost : public base::RefCounted<PluginHost> {
- public:
-  // Access the single PluginHost instance.  Callers
-  // must call deref() when finished with the object.
-  WEBKIT_PLUGINS_EXPORT static PluginHost* Singleton();
-
-  // The table of functions provided to the plugin.
-  NPNetscapeFuncs* host_functions() { return &host_funcs_; }
-
-  // Helper function for parsing post headers, and applying attributes
-  // to the stream.  NPAPI post data include headers + data combined.
-  // This function parses it out and adds it to the stream in a WebKit
-  // style.
-  static bool SetPostData(const char *buf,
-                          uint32 length,
-                          std::vector<std::string>* names,
-                          std::vector<std::string>* values,
-                          std::vector<char>* body);
-
-  WEBKIT_PLUGINS_EXPORT void PatchNPNetscapeFuncs(NPNetscapeFuncs* overrides);
-
- private:
-  friend class base::RefCounted<PluginHost>;
-
-  virtual ~PluginHost();
-
-  PluginHost();
-  void InitializeHostFuncs();
-  NPNetscapeFuncs host_funcs_;
-  DISALLOW_COPY_AND_ASSIGN(PluginHost);
-};
-
-}  // namespace npapi
-}  // namespace webkit
-
-#endif  // WEBKIT_PLUGINS_NPAPI_PLUGIN_HOST_H_