Fix a crash during shutdown where SafeBrowsingProtocolManager could end up getting back NULL for Pro

chrome/browser/safe_browsing/safe_browsing_service.h

 // Copyright (c) 2009 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.
 //
 // The Safe Browsing service is responsible for downloading anti-phishing and
 // anti-malware tables and checking urls against them.
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_
 #define CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_
 
 #include <deque>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/hash_tables.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "base/thread.h"
 #include "base/time.h"
 #include "chrome/browser/safe_browsing/safe_browsing_util.h"
 #include "googleurl/src/gurl.h"
 #include "webkit/glue/resource_type.h"
 
 class BloomFilter;
 class PrefService;
 class SafeBrowsingBlockingPage;
 class SafeBrowsingDatabase;
 class SafeBrowsingProtocolManager;
+class URLRequestContextGetter;
 
 // Construction needs to happen on the main thread.
 class SafeBrowsingService
     : public base::RefCountedThreadSafe<SafeBrowsingService> {
  public:
   // Users of this service implement this interface to be notified
   // asynchronously of the result.
   enum UrlCheckResult {
     URL_SAFE,
     URL_PHISHING,
@@ skipping 24 matching lines @@
   };
 
   // Creates the safe browsing service.  Need to initialize before using.
   SafeBrowsingService();
 
   // Initializes the service.
   void Initialize();
 
   // Called to initialize objects that are used on the io_thread.
   void OnIOInitialize(const std::string& client_key,
-                      const std::string& wrapped_key);
+                      const std::string& wrapped_key,
+                      URLRequestContextGetter* request_context_getter);
 
   // Called to initialize objects that are used on the db_thread.
   void OnDBInitialize();
 
   // Called to shutdown operations on the io_thread.
   void OnIOShutdown();
 
   // Called on the main thread to let us know that the io_thread is going away.
   void ShutDown();
 
@@ skipping 193 matching lines @@
     Client* client;
     GURL url;
     base::Time start;
   } QueuedCheck;
   std::deque<QueuedCheck> queued_checks_;
 
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingService);
 };
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_SERVICE_H_