Added completion notification to Profile's ClearNetworkingHistorySince.

chrome/browser/profiles/profile.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.
 
 // This class gathers state related to a single user profile.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_H_
 
 #include <string>
@@ skipping 276 matching lines @@
 #endif  // defined(OS_CHROMEOS)
 
   // Returns the helper object that provides the proxy configuration service
   // access to the the proxy configuration possibly defined by preferences.
   virtual PrefProxyConfigTracker* GetProxyConfigTracker() = 0;
 
   // Returns the Predictor object used for dns prefetch.
   virtual chrome_browser_net::Predictor* GetNetworkPredictor() = 0;
 
   // Deletes all network related data since |time|. It deletes transport
-  // security state since |time| and it also delete HttpServerProperties data.
-  // The implementation is free to run this on a background thread, so when this
-  // method returns data is not guaranteed to be deleted.
-  virtual void ClearNetworkingHistorySince(base::Time time) = 0;
+  // security state since |time| and it also deletes HttpServerProperties data.
+  // Works asynchronously, however if the |completion| callback is non-null, it
+  // will be posted on the UI thread once the removal process completes.
+  // Be aware that theoretically it is possible that |completion| will be
+  // invoked after the Profile instance has been destroyed.
+  virtual void ClearNetworkingHistorySince(base::Time time,
+                                           const base::Closure& completion) = 0;
 
   // Returns the home page for this profile.
   virtual GURL GetHomePage() = 0;
 
   // Returns whether or not the profile was created by a version of Chrome
   // more recent (or equal to) the one specified.
   virtual bool WasCreatedByVersionOrLater(const std::string& version) = 0;
 
   std::string GetDebugName();
 
@@ skipping 83 matching lines @@
 struct hash<Profile*> {
   std::size_t operator()(Profile* const& p) const {
     return reinterpret_cast<std::size_t>(p);
   }
 };
 
 }  // namespace BASE_HASH_NAMESPACE
 #endif
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_H_