[Extensions] Move remaining notifications out of ExtensionSettingsHandler

extensions/browser/warning_service.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 "extensions/browser/warning_service.h"
 
 #include "content/public/browser/browser_thread.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extensions_browser_client.h"
 #include "extensions/browser/warning_service_factory.h"
@@ skipping 15 matching lines @@
 WarningService::~WarningService() {}
 
 // static
 WarningService* WarningService::Get(content::BrowserContext* browser_context) {
   return WarningServiceFactory::GetForBrowserContext(browser_context);
 }
 
 void WarningService::ClearWarnings(
     const std::set<Warning::WarningType>& types) {
   DCHECK(CalledOnValidThread());
-  bool deleted_anything = false;
+  ExtensionIdSet affected_extensions;
   for (WarningSet::iterator i = warnings_.begin();
        i != warnings_.end();) {
     if (types.find(i->warning_type()) != types.end()) {
-      deleted_anything = true;
+      affected_extensions.insert(i->extension_id());
       warnings_.erase(i++);
     } else {
       ++i;
     }
   }
 
-  if (deleted_anything)
-    NotifyWarningsChanged();
+  if (!affected_extensions.empty())
+    NotifyWarningsChanged(affected_extensions);
 }
 
 std::set<Warning::WarningType> WarningService::
     GetWarningTypesAffectingExtension(const std::string& extension_id) const {
   DCHECK(CalledOnValidThread());
   std::set<Warning::WarningType> result;
   for (WarningSet::const_iterator i = warnings_.begin();
        i != warnings_.end(); ++i) {
     if (i->extension_id() == extension_id)
       result.insert(i->warning_type());
@@ skipping 12 matching lines @@
   for (WarningSet::const_iterator i = warnings_.begin();
        i != warnings_.end(); ++i) {
     if (i->extension_id() == extension_id)
       result.push_back(i->GetLocalizedMessage(&extension_set));
   }
   return result;
 }
 
 void WarningService::AddWarnings(const WarningSet& warnings) {
   DCHECK(CalledOnValidThread());
-  size_t old_size = warnings_.size();
 
-  warnings_.insert(warnings.begin(), warnings.end());
-
-  if (old_size != warnings_.size())
-    NotifyWarningsChanged();
+  ExtensionIdSet affected_extensions;
+  for (const Warning& warning : warnings) {
+    if (warnings_.insert(warning).second)
+      affected_extensions.insert(warning.extension_id());
+  }
+  if (!affected_extensions.empty())
+    NotifyWarningsChanged(affected_extensions);
 }
 
 // static
 void WarningService::NotifyWarningsOnUI(
     void* profile_id,
     const WarningSet& warnings) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   content::BrowserContext* browser_context =
       reinterpret_cast<content::BrowserContext*>(profile_id);
 
   if (!browser_context ||
       !ExtensionsBrowserClient::Get() ||
       !ExtensionsBrowserClient::Get()->IsValidContext(browser_context)) {
     return;
   }
 
   WarningService* warning_service = WarningService::Get(browser_context);
 
   warning_service->AddWarnings(warnings);
 }
 
 void WarningService::AddObserver(Observer* observer) {
   observer_list_.AddObserver(observer);
 }
 
 void WarningService::RemoveObserver(Observer* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
-void WarningService::NotifyWarningsChanged() {
-  FOR_EACH_OBSERVER(Observer, observer_list_, ExtensionWarningsChanged());
+void WarningService::NotifyWarningsChanged(
+    const ExtensionIdSet& affected_extensions) {
+  FOR_EACH_OBSERVER(Observer, observer_list_,
+                    ExtensionWarningsChanged(affected_extensions));
 }
 
 void WarningService::OnExtensionUnloaded(
     content::BrowserContext* browser_context,
     const Extension* extension,
     UnloadedExtensionInfo::Reason reason) {
   // Unloading one extension might have solved the problems of others.
   // Therefore, we clear warnings of this type for all extensions.
   std::set<Warning::WarningType> warning_types =
       GetWarningTypesAffectingExtension(extension->id());
   ClearWarnings(warning_types);
 }
 
 }  // namespace extensions