Add UMA for the new generic permisison class

chrome/browser/content_settings/permission_bubble_request_impl.h

 // Copyright 2014 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_CONTENT_SETTINGS_PERMISSION_BUBBLE_REQUEST_IMPL_H_
 #define CHROME_BROWSER_CONTENT_SETTINGS_PERMISSION_BUBBLE_REQUEST_IMPL_H_
 
 #include "base/callback.h"
 #include "chrome/browser/content_settings/permission_request_id.h"
 #include "chrome/browser/ui/website_settings/permission_bubble_request.h"
 #include "chrome/common/content_settings_types.h"
 
 class GURL;
 
 class PermissionContextBase;
 
 // Default implementation of PermissionBubbleRequest, it is assumed that the
 // caller owns it and that it can be deleted once the |delete_callback|
 // is executed.
 class PermissionBubbleRequestImpl : public PermissionBubbleRequest {
-  public:
+ public:
 
   typedef base::Callback<void(bool persist_permission, bool grant_permission)>
       PermissionDecidedCallback;
 
   PermissionBubbleRequestImpl(
       const GURL& request_origin,
       bool user_gesture,
       ContentSettingsType type,
       const std::string& display_languages,
       const PermissionDecidedCallback permission_decided_callback,
       const base::Closure delete_callback);
 
   virtual ~PermissionBubbleRequestImpl();
 
   // PermissionBubbleRequest:
   virtual int GetIconID() const OVERRIDE;
   virtual base::string16 GetMessageText() const OVERRIDE;
   virtual base::string16 GetMessageTextFragment() const OVERRIDE;
   virtual bool HasUserGesture() const OVERRIDE;
 
   // TODO(miguelg) Change this method to GetOrigin()
   virtual GURL GetRequestingHostname() const OVERRIDE;
+
+  // Remember to call RegisterActionTaken for these methods if you are
+  // overriding them.
   virtual void PermissionGranted() OVERRIDE;
   virtual void PermissionDenied() OVERRIDE;
   virtual void Cancelled() OVERRIDE;
   virtual void RequestFinished() OVERRIDE;
 
+ protected:
+  void RegisterActionTaken() { action_taken_ = true; }
+
  private:
   GURL request_origin_;
   bool user_gesture_;
   ContentSettingsType type_;
   std::string display_languages_;
 
   // Called once a decision is made about the permission.
   const PermissionDecidedCallback permission_decided_callback_;
 
   // Called when the bubble is no longer in use so it can be deleted by
   // the caller.
   const base::Closure delete_callback_;
   bool is_finished_;
+  bool action_taken_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionBubbleRequestImpl);
 };
 
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_PERMISSION_BUBBLE_REQUEST_IMPL_H_