Remove some dead NPAPI code after r363119.

content/plugin/webplugin_delegate_stub.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_PLUGIN_WEBPLUGIN_DELEGATE_STUB_H_
 #define CONTENT_PLUGIN_WEBPLUGIN_DELEGATE_STUB_H_
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "build/build_config.h"
 #include "content/child/npapi/npobject_stub.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "third_party/npapi/bindings/npapi.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 #include "url/gurl.h"
 
 struct PluginMsg_Init_Params;
-struct PluginMsg_DidReceiveResponseParams;
-struct PluginMsg_FetchURL_Params;
 struct PluginMsg_UpdateGeometry_Param;
 
 namespace blink {
 class WebInputEvent;
 }
 
 namespace content {
 class PluginChannel;
 class WebCursor;
 class WebPluginDelegateImpl;
@@ skipping 21 matching lines @@
  private:
   friend class base::RefCounted<WebPluginDelegateStub>;
 
   ~WebPluginDelegateStub() override;
 
   // Message handlers for the WebPluginDelegate calls that are proxied from the
   // renderer over the IPC channel.
   void OnInit(const PluginMsg_Init_Params& params,
               bool* transparent,
               bool* result);
-  void OnWillSendRequest(int id, const GURL& url, int http_status_code);
-  void OnDidReceiveResponse(const PluginMsg_DidReceiveResponseParams& params);
-  void OnDidReceiveData(int id, const std::vector<char>& buffer,
-                        int data_offset);
-  void OnDidFinishLoading(int id);
-  void OnDidFail(int id);
   void OnSetFocus(bool focused);
   void OnHandleInputEvent(const blink::WebInputEvent* event,
                           bool* handled, WebCursor* cursor);
   void OnPaint(const gfx::Rect& damaged_rect);
   void OnDidPaint();
   void OnUpdateGeometry(const PluginMsg_UpdateGeometry_Param& param);
   void OnGetPluginScriptableObject(int* route_id);
   void OnGetFormValue(base::string16* value, bool* success);
 
   void OnSetContentAreaFocus(bool has_focus);
@@ skipping 26 matching lines @@
 
   // The url of the main frame hosting the plugin.
   GURL page_url_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(WebPluginDelegateStub);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PLUGIN_WEBPLUGIN_DELEGATE_STUB_H_