Convert ExtensionRegistry to a BrowserContextKeyedService

chrome/browser/extensions/extension_system_factory.cc

Index: chrome/browser/extensions/extension_system_factory.cc
diff --git a/chrome/browser/extensions/extension_system_factory.cc b/chrome/browser/extensions/extension_system_factory.cc
index 228d1969a496204de9b14ff5ebecddbd7b51b03b..3289e796ac1f8b8ea08ee2b21bd852e1438bf8ee 100644
--- a/chrome/browser/extensions/extension_system_factory.cc
+++ b/chrome/browser/extensions/extension_system_factory.cc
@@ -10,6 +10,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/global_error/global_error_service_factory.h"
 #include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
+#include "extensions/browser/extension_registry_factory.h"
 #include "extensions/browser/extensions_browser_client.h"
 
 namespace extensions {
@@ -33,6 +34,8 @@ ExtensionSystemSharedFactory::ExtensionSystemSharedFactory()
         "ExtensionSystemShared",
         BrowserContextDependencyManager::GetInstance()) {
   DependsOn(ExtensionPrefsFactory::GetInstance());
+  // This depends on ExtensionService which depends on ExtensionRegistry.
+  DependsOn(ExtensionRegistryFactory::GetInstance());
   DependsOn(GlobalErrorServiceFactory::GetInstance());
   DependsOn(policy::ProfilePolicyConnectorFactory::GetInstance());
 }