Removing PrefObserver usage, batch 4.

chrome/browser/extensions/component_loader.cc

Index: chrome/browser/extensions/component_loader.cc
diff --git a/chrome/browser/extensions/component_loader.cc b/chrome/browser/extensions/component_loader.cc
index dc99e22ea503dd43e7e53272293d4efc6036602e..82a2c2890945a24338fef31bd8cae79e83100141 100644
--- a/chrome/browser/extensions/component_loader.cc
+++ b/chrome/browser/extensions/component_loader.cc
@@ -77,7 +77,10 @@ ComponentLoader::ComponentLoader(ExtensionServiceInterface* extension_service,
 
   // This pref is set by policy. We have to watch it for change because on
   // ChromeOS, policy isn't loaded until after the browser process is started.
-  pref_change_registrar_.Add(prefs::kEnterpriseWebStoreURL, this);
+  pref_change_registrar_.Add(
+      prefs::kEnterpriseWebStoreURL,
+      base::Bind(&ComponentLoader::AddOrReloadEnterpriseWebStore,
+                 base::Unretained(this)));
 }
 
 ComponentLoader::~ComponentLoader() {
@@ -399,12 +402,6 @@ void ComponentLoader::AddDefaultComponentExtensions() {
   AddScriptBubble();
 }
 
-void ComponentLoader::OnPreferenceChanged(PrefServiceBase* service,
-                                          const std::string& pref_name) {
-  DCHECK_EQ(std::string(prefs::kEnterpriseWebStoreURL), pref_name);
-  AddOrReloadEnterpriseWebStore();
-}
-
 // static
 void ComponentLoader::RegisterUserPrefs(PrefService* prefs) {
   prefs->RegisterStringPref(prefs::kEnterpriseWebStoreURL,