Rename PluginUpdater to PluginPrefs and make it per-profile.

chrome/browser/profiles/profile_dependency_manager.cc

Index: chrome/browser/profiles/profile_dependency_manager.cc
diff --git a/chrome/browser/profiles/profile_dependency_manager.cc b/chrome/browser/profiles/profile_dependency_manager.cc
index cdfbe2f4d4633909c274d66f212ed92fcd1c46ea..db551a2dd36e50f92b73158536132c116ddec066 100644
--- a/chrome/browser/profiles/profile_dependency_manager.cc
+++ b/chrome/browser/profiles/profile_dependency_manager.cc
@@ -9,6 +9,7 @@
 #include <iterator>
 
 #include "chrome/browser/background/background_contents_service_factory.h"
+#include "chrome/browser/plugin_prefs.h"
 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service_factory.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/profiles/profile_keyed_service_factory.h"
@@ -36,6 +37,7 @@ void AssertFactoriesBuilt() {
   if (!g_initialized) {
     BackgroundContentsServiceFactory::GetInstance();
     CloudPrintProxyServiceFactory::GetInstance();
+    PluginPrefs::Initialize();
     SessionServiceFactory::GetInstance();
     TabRestoreServiceFactory::GetInstance();
     TemplateURLServiceFactory::GetInstance();