Add UMA metrics to phishguard pings

chrome/browser/safe_browsing/chrome_password_protection_service.h

 // Copyright 2017 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_SAFE_BROWSING_CHROME_PASSWORD_PROTECTION_SERVICE_H_
 #define CHROME_BROWSER_SAFE_BROWSING_CHROME_PASSWORD_PROTECTION_SERVICE_H_
 
 #include "components/safe_browsing/password_protection/password_protection_service.h"
 
 class Profile;
@@ skipping 18 matching lines @@
   // info into |frame|.
   void FillReferrerChain(const GURL& event_url,
                          int event_tab_id,
                          LoginReputationClientRequest::Frame* frame) override;
 
   bool IsExtendedReporting() override;
 
   bool IsIncognito() override;
 
   // Checks if Finch config allows sending pings to Safe Browsing Server.
+  // If not, indicated its reason by modifying |reason|.
   // |feature| should be either kLowReputationPinging or
   // kProtectedPasswordEntryPinging.
-  bool IsPingingEnabled(const base::Feature& feature) override;
+  bool IsPingingEnabled(const base::Feature& feature,
+                        RequestOutcome* reason) override;
 
   // If user enabled history syncing.
   bool IsHistorySyncEnabled() override;
 
   FRIEND_TEST_ALL_PREFIXES(
       ChromePasswordProtectionServiceTest,
       VerifyFinchControlForLowReputationPingSBEROnlyNoIncognito);
   FRIEND_TEST_ALL_PREFIXES(
       ChromePasswordProtectionServiceTest,
       VerifyFinchControlForLowReputationPingSBERAndHistorySyncNoIncognito);
@@ skipping 10 matching lines @@
   // Profile associated with this instance.
   Profile* profile_;
   scoped_refptr<SafeBrowsingNavigationObserverManager>
       navigation_observer_manager_;
   DISALLOW_COPY_AND_ASSIGN(ChromePasswordProtectionService);
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_CHROME_PASSWORD_PROTECTION_SERVICE_H_