Refactor feedback to use native JS object

components/dom_distiller/content/renderer/distiller_native_javascript.h

 // Copyright 2015 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 COMPONENTS_DOM_DISTILLER_CONTENT_RENDERER_DISTILLER_NATIVE_JAVASCRIPT_H_
 #define COMPONENTS_DOM_DISTILLER_CONTENT_RENDERER_DISTILLER_NATIVE_JAVASCRIPT_H_
 
 #include "components/dom_distiller/content/common/distiller_javascript_service.mojom.h"
 #include "content/public/renderer/render_frame.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "v8/include/v8.h"
 
 namespace dom_distiller {
 
 // This class is the primary interface for custom JavaScript introduced by the
 // dom-distiller. Callbacks for JavaScript functionality and the communication
 // channel to the browser process are maintained here.
 class DistillerNativeJavaScript {
  public:
   explicit DistillerNativeJavaScript(content::RenderFrame* render_frame);
   ~DistillerNativeJavaScript();
 
   // Add the "distiller" JavaScript object and its functions to the current
   // |RenderFrame|.
   void AddJavaScriptObjectToFrame(v8::Local<v8::Context> context);
 
  private:
+  // Make sure the mojo service is connected.
+  void EnsureServiceConnected();
+
   // Native code for "distiller.echo" in JavaScript. This simply returns the
   // provided string.
   std::string DistillerEcho(const std::string& message);
 
+  // Send feedback about distillation quality.
+  void DistillerSendFeedback(bool good);
+
   content::RenderFrame* render_frame_;
   DistillerJavaScriptServicePtr distiller_js_service_;
 };
 
 // static
 v8::Local<v8::Object> GetOrCreateDistillerObject(v8::Isolate* isolate,
                                                  v8::Local<v8::Object> global);
 
 }  // namespace dom_distiller
 
 #endif  // COMPONENTS_DOM_DISTILLER_CONTENT_RENDERER_DISTILLER_NATIVE_JAVASCRIPT_H_