Added completion notification to Profile's ClearNetworkingHistorySince.

chrome/browser/net/http_server_properties_manager.h

Index: chrome/browser/net/http_server_properties_manager.h
diff --git a/chrome/browser/net/http_server_properties_manager.h b/chrome/browser/net/http_server_properties_manager.h
index dc6a3a8ab18b74010c0585d53729e6ffc0d6cf23..07e34ba7080513b26a0e57699999df4a8d495a8f 100644
--- a/chrome/browser/net/http_server_properties_manager.h
+++ b/chrome/browser/net/http_server_properties_manager.h
@@ -67,11 +67,15 @@ class HttpServerPropertiesManager
   // Register |prefs| for properties managed here.
   static void RegisterPrefs(PrefService* prefs);
 
+  // Deletes all data. Works asynchronously, but if a |completion| callback is
+  // provided, it will be fired on the UI thread when everything is done.
+  void Clear(const base::Closure& completion);
+
   // ----------------------------------
   // net::HttpServerProperties methods:
   // ----------------------------------
 
-  // Deletes all data.
+  // Deletes all data. Works asynchronously.
   virtual void Clear() OVERRIDE;
 
   // Returns true if |server| supports SPDY. Should only be called from IO
@@ -174,16 +178,20 @@ class HttpServerPropertiesManager
   // Update prefs::kHttpServerProperties in preferences with the cached data
   // from |http_server_properties_impl_|. This gets the data on IO thread and
   // posts a task (UpdatePrefsOnUI) to update the preferences UI thread.
-  // Virtual for testing.
-  virtual void UpdatePrefsFromCacheOnIO();
+  void UpdatePrefsFromCacheOnIO();
+
+  // Same as above, but fires an optional |completion| callback on the UI thread
+  // when finished. Virtual for testing.
+  virtual void UpdatePrefsFromCacheOnIO(const base::Closure& completion);
 
-  // Update prefs::kHttpServerProperties preferences on UI thread. Protected for
-  // testing.
+  // Update prefs::kHttpServerProperties preferences on UI thread. Executes an
+  // optional |completion| callback when finished. Protected for testing.
   void UpdatePrefsOnUI(
       base::ListValue* spdy_server_list,
       net::SpdySettingsMap* spdy_settings_map,
       net::AlternateProtocolMap* alternate_protocol_map,
-      net::PipelineCapabilityMap* pipeline_capability_map);
+      net::PipelineCapabilityMap* pipeline_capability_map,
+      const base::Closure& completion);
 
  private:
   // Callback for preference changes.