Move ExtensionSystem into extensions namespace

chrome/browser/extensions/extension_management_apitest.cc

Index: chrome/browser/extensions/extension_management_apitest.cc
diff --git a/chrome/browser/extensions/extension_management_apitest.cc b/chrome/browser/extensions/extension_management_apitest.cc
index ade86858901b6aa46eb08f512144fabb9eb383f3..91c0aa5ca4c4747f6686e9c0b570db6fc8b3c2a1 100644
--- a/chrome/browser/extensions/extension_management_apitest.cc
+++ b/chrome/browser/extensions/extension_management_apitest.cc
@@ -102,7 +102,7 @@ IN_PROC_BROWSER_TEST_F(ExtensionManagementApiTest, ManagementPolicyAllowed) {
                                         false));
 
   // Ensure that all actions are allowed.
-  ExtensionSystem::Get(
+  extensions::ExtensionSystem::Get(
       browser()->profile())->management_policy()->UnregisterAllProviders();
 
   ASSERT_TRUE(RunExtensionSubtest("management/management_policy",
@@ -120,8 +120,8 @@ IN_PROC_BROWSER_TEST_F(ExtensionManagementApiTest, ManagementPolicyProhibited) {
                                         false));
 
   // Prohibit status changes.
-  extensions::ManagementPolicy* policy =
-      ExtensionSystem::Get(browser()->profile())->management_policy();
+  extensions::ManagementPolicy* policy = extensions::ExtensionSystem::Get(
+      browser()->profile())->management_policy();
   policy->UnregisterAllProviders();
   extensions::TestManagementPolicyProvider provider(
     extensions::TestManagementPolicyProvider::PROHIBIT_MODIFY_STATUS);