Split up ios/web:test_support.

ios/web/public/test/response_providers/data_response_provider.h

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// 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_DATA_RESPONSE_PROVIDER_H_
-#define IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_DATA_RESPONSE_PROVIDER_H_
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "base/memory/ref_counted.h"
-#import "ios/web/public/test/response_providers/response_provider.h"
-#include "net/http/http_response_headers.h"
-
-namespace web {
-
-// An abstract ResponseProvider that returns a GCDWebServerDataResponse for a
-// request. This class encapsulates the logic to convert the response headers
-// and body received from |GetResponseHeadersAndBody| into a
-// GCDWebServerDataResponse.
-class DataResponseProvider : public ResponseProvider {
- public:
-  // ResponseProvider implementation.
-  GCDWebServerResponse* GetGCDWebServerResponse(const Request& request) final;
-
-  // Returns the headers and the response body. Will only be called if the
-  // provider can handle the request.
-  // Note: This should actually be under protected but since this is used by
-  // an adapter in order to work with the old MockHttpServer it is under
-  // public.
-  virtual void GetResponseHeadersAndBody(
-      const Request& request,
-      scoped_refptr<net::HttpResponseHeaders>* headers,
-      std::string* response_body) = 0;
-};
-
-}  // namespace web
-
-#endif  // IOS_WEB_PUBLIC_TEST_RESPONSE_PROVIDERS_DATA_RESPONSE_PROVIDER_H_