Remove profile-keyed factory boilerplates.

chrome/browser/extensions/api/commands/command_service.cc

Index: chrome/browser/extensions/api/commands/command_service.cc
diff --git a/chrome/browser/extensions/api/commands/command_service.cc b/chrome/browser/extensions/api/commands/command_service.cc
index ba37a10dd1986b28cf3c96a2b7a446c785dbb17a..5fc50beac68496e065d8084a6519d71a9fb8a191 100644
--- a/chrome/browser/extensions/api/commands/command_service.cc
+++ b/chrome/browser/extensions/api/commands/command_service.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/extensions/api/commands/command_service.h"
 
+#include "base/lazy_instance.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_keybinding_registry.h"
@@ -51,6 +52,19 @@ CommandService::CommandService(Profile* profile)
 CommandService::~CommandService() {
 }
 
+static base::LazyInstance<ProfileKeyedAPIFactory<CommandService> >
+g_factory = LAZY_INSTANCE_INITIALIZER;
+
+// static
+ProfileKeyedAPIFactory<CommandService>* CommandService::GetFactoryInstance() {
+  return &g_factory.Get();
+}
+
+// static
+CommandService* CommandService::Get(Profile* profile) {
+  return ProfileKeyedAPIFactory<CommandService>::GetForProfile(profile);
+}
+
 bool CommandService::GetBrowserActionCommand(
     const std::string& extension_id,
     QueryType type,