Add UMA metrics for pop-up blocked page action on desktop

chrome/browser/ui/content_settings/content_setting_bubble_model.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 CHROME_BROWSER_UI_CONTENT_SETTINGS_CONTENT_SETTING_BUBBLE_MODEL_H_
 #define CHROME_BROWSER_UI_CONTENT_SETTINGS_CONTENT_SETTING_BUBBLE_MODEL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 163 matching lines @@
   // if possible.
   virtual ContentSettingSubresourceFilterBubbleModel*
   AsSubresourceFilterBubbleModel();
 
   // Sets the Rappor service used for testing.
   void SetRapporServiceImplForTesting(
       rappor::RapporServiceImpl* rappor_service) {
     rappor_service_ = rappor_service;
   }
 
+  static const int kAllowButtonIndex;
+
  protected:
   ContentSettingBubbleModel(
       Delegate* delegate,
       content::WebContents* web_contents,
       Profile* profile);
 
   content::WebContents* web_contents() const { return web_contents_; }
   Profile* profile() const { return profile_; }
   Delegate* delegate() const { return delegate_; }
 
@@ skipping 181 matching lines @@
   // The content settings that are associated with the individual radio
   // buttons.
   ContentSetting radio_item_setting_[2];
   // The state of the microphone and camera access.
   TabSpecificContentSettings::MicrophoneCameraState state_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentSettingMediaStreamBubbleModel);
 };
 
 #endif  // CHROME_BROWSER_UI_CONTENT_SETTINGS_CONTENT_SETTING_BUBBLE_MODEL_H_