Remove unused foreground member variable from SB Protocol Manager.

chrome/browser/safe_browsing/protocol_manager.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_SAFE_BROWSING_PROTOCOL_MANAGER_H_
 #define CHROME_BROWSER_SAFE_BROWSING_PROTOCOL_MANAGER_H_
 
 // A class that implements Chrome's interface with the SafeBrowsing protocol.
 // See https://developers.google.com/safe-browsing/developers_guide_v2 for
 // protocol details.
@@ skipping 173 matching lines @@
   // |metric_name| is the name of the UMA metric to record the response code or
   // error code against, |status| represents the status of the HTTP request, and
   // |response code| represents the HTTP response code received from the server.
   static void RecordHttpResponseOrErrorCode(
       const char* metric_name, const net::URLRequestStatus& status,
       int response_code);
 
   // Returns whether another update is currently scheduled.
   bool IsUpdateScheduled() const;
 
-  // Called when app changes status of foreground or background.
-  void SetAppInForeground(bool foreground) {
-    app_in_foreground_ = foreground;
-  }
-
  protected:
   // Constructs a SafeBrowsingProtocolManager for |delegate| that issues
   // network requests using |request_context_getter|.
   SafeBrowsingProtocolManager(
       SafeBrowsingProtocolManagerDelegate* delegate,
       net::URLRequestContextGetter* request_context_getter,
       const SafeBrowsingProtocolConfig& config);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(SafeBrowsingProtocolManagerTest, TestBackOffTimes);
@@ skipping 253 matching lines @@
   // Data to POST when doing an update.
   std::string update_list_data_;
 
   // When true, protocol manager will not start an update unless
   // ForceScheduleNextUpdate() is called. This is set for testing purpose.
   bool disable_auto_update_;
 
   // ID for URLFetchers for testing.
   int url_fetcher_id_;
 
-  // Whether the app is in foreground or background.
-  bool app_in_foreground_;
-
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingProtocolManager);
 };
 
 // Interface of a factory to create ProtocolManager.  Useful for tests.
 class SBProtocolManagerFactory {
  public:
   SBProtocolManagerFactory() {}
   virtual ~SBProtocolManagerFactory() {}
   virtual SafeBrowsingProtocolManager* CreateProtocolManager(
       SafeBrowsingProtocolManagerDelegate* delegate,
@@ skipping 40 matching lines @@
       AddChunksCallback callback) = 0;
 
   // Delete chunks from the database.
   virtual void DeleteChunks(
       scoped_ptr<std::vector<SBChunkDelete> > chunk_deletes) = 0;
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_PROTOCOL_MANAGER_H_