Split up ios/web:test_support.

ios/web/public/test/http_server/delayed_response_provider.h

Index: ios/web/public/test/http_server/delayed_response_provider.h
diff --git a/ios/web/public/test/response_providers/delayed_response_provider.h b/ios/web/public/test/http_server/delayed_response_provider.h
similarity index 79%
rename from ios/web/public/test/response_providers/delayed_response_provider.h
rename to ios/web/public/test/http_server/delayed_response_provider.h
index c313510fa6bc3c331c96c6af9030073e72f42bb3..d196911cecaface2deff3ad212ed68935a081795 100644
--- a/ios/web/public/test/response_providers/delayed_response_provider.h
+++ b/ios/web/public/test/http_server/delayed_response_provider.h
@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_DELAYED_RESPONSE_PROVIDER_H_
-#define IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_DELAYED_RESPONSE_PROVIDER_H_
+#ifndef IOS_WEB_PUBLIC_TEST_HTTP_SERVER_DELAYED_RESPONSE_PROVIDER_H_
+#define IOS_WEB_PUBLIC_TEST_HTTP_SERVER_DELAYED_RESPONSE_PROVIDER_H_
 
 #include <memory>
 
-#import "ios/web/public/test/response_providers/response_provider.h"
+#import "ios/web/public/test/http_server/response_provider.h"
 
 namespace web {
 
@@ -40,4 +40,4 @@ class DelayedResponseProvider : public ResponseProvider {
 
 }  // namespace web
 
-#endif  // IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_DELAYED_RESPONSE_PROVIDER_H_
+#endif  // IOS_WEB_PUBLIC_TEST_HTTP_SERVER_DELAYED_RESPONSE_PROVIDER_H_