Record metric of geo permission before and after showing the disclosure.

chrome/browser/android/search_geolocation_disclosure_tab_helper.h

 // Copyright 2016 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_ANDROID_SEARCH_GEOLOCATION_DISCLOSURE_TAB_HELPER_H_
 #define CHROME_BROWSER_ANDROID_SEARCH_GEOLOCATION_DISCLOSURE_TAB_HELPER_H_
 
 #include "base/macros.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
@@ skipping 17 matching lines @@
   void NavigationEntryCommitted(
       const content::LoadCommittedDetails& load_details) override;
 
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
  private:
   explicit SearchGeolocationDisclosureTabHelper(content::WebContents* contents);
   friend class content::WebContentsUserData<
       SearchGeolocationDisclosureTabHelper>;
 
-  void MaybeShowDefaultSearchGeolocationDisclosure(GURL gurl);
+  void MaybeShowDefaultSearchGeolocationDisclosure(const GURL& gurl);
+
+  // Record metrics, once per client, of the permission state before and after
+  // the disclosure has been shown.
+  void RecordPreDisclosureMetrics(const GURL& gurl);
+  void RecordPostDisclosureMetrics(const GURL& gurl);
   Profile* GetProfile();
 
   bool consistent_geolocation_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchGeolocationDisclosureTabHelper);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_SEARCH_GEOLOCATION_DISCLOSURE_TAB_HELPER_H_