[HBD] Call PurgePluginListCache() whenever plugin content settings change

chrome/browser/profiles/profile_impl.cc

 // 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.
 
 #include "chrome/browser/profiles/profile_impl.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 606 matching lines @@
   // Make sure we initialize the ProfileIOData after everything else has been
   // initialized that we might be reading from the IO thread.
 
   io_data_.Init(cookie_path, channel_id_path, cache_path,
                 cache_max_size, media_cache_path, media_cache_max_size,
                 extensions_cookie_path, GetPath(), predictor_,
                 session_cookie_mode, GetSpecialStoragePolicy(),
                 CreateDomainReliabilityMonitor(local_state));
 
 #if defined(ENABLE_PLUGINS)
   ChromePluginServiceFilter::GetInstance()->RegisterResourceContext(

[Lei Zhang, 2016/08/15 18:37:56]

Can we just pass in |this|, and have RegisterResourceContext() figure out the
PluginPrefs and HostContentSettingsMap from the Profile* ?

[trizzofo, 2016/08/15 20:35:58]

Yes. Done!

       PluginPrefs::GetForProfile(this).get(),
-      HostContentSettingsMapFactory::GetForProfile(this),
+      HostContentSettingsMapFactory::GetForProfile(this), this,
       io_data_.GetResourceContextNoInit());
 #endif
 
   TRACE_EVENT0("browser", "ProfileImpl::SetSaveSessionStorageOnDisk");
   content::BrowserContext::GetDefaultStoragePartition(this)->
       GetDOMStorageContext()->SetSaveSessionStorageOnDisk();
 
   // The DomDistillerViewerSource is not a normal WebUI so it must be registered
   // as a URLDataSource early.
   dom_distiller::RegisterViewerSource(this);
@@ skipping 638 matching lines @@
 ProfileImpl::CreateDomainReliabilityMonitor(PrefService* local_state) {
   domain_reliability::DomainReliabilityService* service =
       domain_reliability::DomainReliabilityServiceFactory::GetInstance()->
           GetForBrowserContext(this);
   if (!service)
     return std::unique_ptr<domain_reliability::DomainReliabilityMonitor>();
 
   return service->CreateMonitor(
       BrowserThread::GetTaskRunnerForThread(BrowserThread::IO));
 }