Add metrics for Safe Browsing blacklist response.

chrome/browser/permissions/permission_blacklist_client.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_PERMISSIONS_PERMISSION_BLACKLIST_CLIENT_H_
 #define CHROME_BROWSER_PERMISSIONS_PERMISSION_BLACKLIST_CLIENT_H_
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
-#include "chrome/browser/permissions/permission_util.h"
 #include "components/safe_browsing_db/database_manager.h"
 #include "content/public/browser/permission_type.h"
 #include "content/public/browser/web_contents_observer.h"
 
 class GURL;
 
 namespace content {
 class WebContents;
 }
 
 namespace base {
 class OneShotTimer;
+class ElapsedTimer;
 }
 
 // The client used when checking whether a permission has been blacklisted by
 // Safe Browsing. The check is done asynchronously as no state can be stored in
 // PermissionContextBase (since additional permission requests may be made).
 // This class must be created and destroyed on the UI thread.
 class PermissionBlacklistClient
     : public safe_browsing::SafeBrowsingDatabaseManager::Client,
       public base::RefCountedThreadSafe<PermissionBlacklistClient>,
       public content::WebContentsObserver {
@@ skipping 22 matching lines @@
 
   ~PermissionBlacklistClient() override;
 
   void StartCheck(const GURL& request_origin);
 
   // SafeBrowsingDatabaseManager::Client implementation.
   void OnCheckApiBlacklistUrlResult(
       const GURL& url,
       const safe_browsing::ThreatMetadata& metadata) override;
 
-  void EvaluateBlacklistResultOnUiThread(bool permission_blocked);
+  void EvaluateBlacklistResultOnUiThread(bool response);
 
   // WebContentsObserver implementation. Sets a flag so that when the database
   // manager returns with a result, it won't attempt to run the callback with a
   // deleted WebContents.
   void WebContentsDestroyed() override;
 
   scoped_refptr<safe_browsing::SafeBrowsingDatabaseManager> db_manager_;
   content::PermissionType permission_type_;
 
   // PermissionContextBase callback to run on the UI thread.
   base::Callback<void(bool)> callback_;
 
   // Timer to abort the Safe Browsing check if it takes too long. Created and
   // used on the IO Thread.
   std::unique_ptr<base::OneShotTimer> timer_;
+  std::unique_ptr<base::ElapsedTimer> elapsed_timer_;
   int timeout_;
 
   // True if |callback_| should be invoked, if web_contents() is destroyed, this
   // is set to false.
   bool is_active_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionBlacklistClient);
 };
 
 #endif  // CHROME_BROWSER_PERMISSIONS_PERMISSION_BLACKLIST_CLIENT_H_