Remove NPAPI support for form data

content/renderer/npapi/webplugin_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_RENDERER_NPAPI_WEBPLUGIN_IMPL_H_
 #define CONTENT_RENDERER_NPAPI_WEBPLUGIN_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 54 matching lines @@
   // Helper function for sorting post data.
   CONTENT_EXPORT static bool SetPostData(blink::WebURLRequest* request,
                                          const char* buf,
                                          uint32_t length);
 
   blink::WebFrame* webframe() { return webframe_; }
 
   // blink::WebPlugin methods:
   bool initialize(blink::WebPluginContainer* container) override;
   void destroy() override;
-  bool getFormValue(blink::WebString& value) override;
   void updateAllLifecyclePhases() override;
   void paint(blink::WebCanvas* canvas,
              const blink::WebRect& paint_rect) override;
   void updateGeometry(const blink::WebRect& window_rect,
                       const blink::WebRect& clip_rect,
                       const blink::WebRect& unobscured_rect,
                       const blink::WebVector<blink::WebRect>& cut_outs_rects,
                       bool is_visible) override;
   void updateFocus(bool focused, blink::WebFocusType focus_type) override;
   void updateVisibility(bool visible) override;
@@ skipping 128 matching lines @@
   // these so that we can re-initialize the plugin if we need to.
   std::vector<std::string> arg_names_;
   std::vector<std::string> arg_values_;
 
   DISALLOW_COPY_AND_ASSIGN(WebPluginImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_NPAPI_WEBPLUGIN_IMPL_H_