Avoid using ContentBrowserClient::IsIllegalOrigin in ResourceDispatcherHost.

extensions/shell/test/shell_test.cc

Index: extensions/shell/test/shell_test.cc
diff --git a/extensions/shell/test/shell_test.cc b/extensions/shell/test/shell_test.cc
index 96ebb2a69441fd8adaee050cd2cafb93f0d97113..a4efedc170b17b2c141f7db3faf60bf4a0746a46 100644
--- a/extensions/shell/test/shell_test.cc
+++ b/extensions/shell/test/shell_test.cc
@@ -11,8 +11,10 @@
 #include "base/path_service.h"
 #include "build/build_config.h"
 #include "components/version_info/version_info.h"
+#include "content/public/browser/resource_dispatcher_host.h"
 #include "content/public/common/content_switches.h"
 #include "extensions/browser/extension_system.h"
+#include "extensions/common/constants.h"
 #include "extensions/shell/browser/desktop_controller.h"
 #include "extensions/shell/browser/shell_content_browser_client.h"
 #include "extensions/shell/browser/shell_extension_system.h"
@@ -54,6 +56,9 @@ void AppShellTest::SetUpOnMainThread() {
 
   extension_system_ = static_cast<ShellExtensionSystem*>(
       ExtensionSystem::Get(browser_context_));
+
+  content::ResourceDispatcherHost::Get()->AddSchemeForAccessCheck(
+      extensions::kExtensionScheme);
 }
 
 void AppShellTest::RunTestOnMainThreadLoop() {