Implement CachedMetadata handling on MojoAsyncResourceHandler

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 <stdint.h>
+#include <vector>
 
 #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/common/url_loader_factory.mojom.h"
 #include "content/public/common/resource_response.h"
 #include "mojo/public/c/system/data_pipe.h"
 #include "mojo/public/cpp/bindings/associated_binding.h"
 #include "net/url_request/redirect_info.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,
                          mojom::DownloadedTempFilePtr downloaded_file) override;
   void OnReceiveRedirect(const net::RedirectInfo& redirect_info,
                          const ResourceResponseHead& response_head) override;
   void OnDataDownloaded(int64_t data_length, int64_t encoded_length) override;
+  void OnReceiveCachedMetadata(const std::vector<uint8_t>& data) override;
   void OnTransferSizeUpdated(int32_t transfer_size_diff) 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_redirect() const { return has_received_redirect_; }
   bool has_data_downloaded() const { return has_data_downloaded_; }
+  bool has_received_cached_metadata() const {
+    return has_received_cached_metadata_;
+  }
   bool has_received_completion() const { return has_received_completion_; }
   const ResourceResponseHead& response_head() const { return response_head_; }
   const net::RedirectInfo& redirect_info() const { return redirect_info_; }
+  const std::string& cached_metadata() const {
+    return cached_metadata_;
+  }
   mojo::DataPipeConsumerHandle response_body() { return response_body_.get(); }
   const ResourceRequestCompletionStatus& completion_status() const {
     return completion_status_;
   }
   int64_t download_data_length() const { return download_data_length_; }
   int64_t encoded_download_data_length() const {
     return encoded_download_data_length_;
   }
   int64_t body_transfer_size() const { return body_transfer_size_; }
 
   void ClearHasReceivedRedirect();
   // Creates an AssociatedPtrInfo, binds it to |*this| and returns it. The
   // returned PtrInfo is marked as remote, i.e., expected to be passed to the
   // remote endpoint.
   mojom::URLLoaderClientAssociatedPtrInfo CreateRemoteAssociatedPtrInfo(
       mojo::AssociatedGroup* associated_group);
 
   void Unbind();
 
   void RunUntilResponseReceived();
   void RunUntilRedirectReceived();
   void RunUntilDataDownloaded();
+  void RunUntilCachedMetadataReceived();
   void RunUntilResponseBodyArrived();
   void RunUntilComplete();
 
  private:
   mojo::AssociatedBinding<mojom::URLLoaderClient> binding_;
   ResourceResponseHead response_head_;
   net::RedirectInfo redirect_info_;
+  std::string cached_metadata_;
   mojo::ScopedDataPipeConsumerHandle response_body_;
   ResourceRequestCompletionStatus completion_status_;
   bool has_received_response_ = false;
   bool has_received_redirect_ = false;
   bool has_data_downloaded_ = false;
+  bool has_received_cached_metadata_ = false;
   bool has_received_completion_ = false;
   base::Closure quit_closure_for_on_receive_response_;
   base::Closure quit_closure_for_on_receive_redirect_;
   base::Closure quit_closure_for_on_data_downloaded_;
+  base::Closure quit_closure_for_on_receive_cached_metadata_;
   base::Closure quit_closure_for_on_start_loading_response_body_;
   base::Closure quit_closure_for_on_complete_;
   mojom::URLLoaderFactoryPtr url_loader_factory_;
   int64_t download_data_length_ = 0;
   int64_t encoded_download_data_length_ = 0;
   int64_t body_transfer_size_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(TestURLLoaderClient);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_