Use mojo for Chrome Loading, Part 1

content/browser/loader/test_url_loader_client.h

+// Copyright 2016 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 CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_
+#define CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "content/common/resource_request_completion_status.h"
+#include "content/common/url_loader.mojom.h"
+#include "content/public/common/resource_response.h"
+#include "mojo/public/c/system/data_pipe.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace content {
+
+// A TestURLLoaderClient records URLLoaderClient function calls. It also calls
+// the closure set via set_quit_closure if set, in order to make it possible to
+// create a base::RunLoop, set its quit closure to this client and then run the
+// RunLoop.
+class TestURLLoaderClient final : public mojom::URLLoaderClient {
+ public:
+  TestURLLoaderClient();
+  ~TestURLLoaderClient() override;
+
+  void OnReceiveResponse(const ResourceResponseHead& response_head) override;
+  void OnStartLoadingResponseBody(
+      mojo::ScopedDataPipeConsumerHandle body) override;
+  void OnComplete(const ResourceRequestCompletionStatus& status) override;
+
+  bool has_received_response() const { return has_received_response_; }
+  bool has_received_completion() const { return has_received_completion_; }
+  const ResourceResponseHead& response_head() const { return response_head_; }
+  mojo::DataPipeConsumerHandle response_body() { return response_body_.get(); }
+  const ResourceRequestCompletionStatus& completion_status() const {
+    return completion_status_;
+  }
+
+  mojom::URLLoaderClientPtr CreateInterfacePtrAndBind();
+  void Unbind();
+
+  void RunUntilResponseReceived();
+  void RunUntilResponseBodyArrived();
+  void RunUntilComplete();
+
+ private:
+  mojo::Binding<mojom::URLLoaderClient> binding_;
+  ResourceResponseHead response_head_;
+  mojo::ScopedDataPipeConsumerHandle response_body_;
+  ResourceRequestCompletionStatus completion_status_;
+  bool has_received_response_ = false;
+  bool has_received_completion_ = false;
+  base::Closure quit_closure_for_on_received_response_;
+  base::Closure quit_closure_for_on_start_loading_response_body_;
+  base::Closure quit_closure_for_on_complete_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestURLLoaderClient);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_