Reduce/Remove URLRequest dependencies from AppCacheRequestHandler

content/browser/appcache/appcache_request.h

+// Copyright (c) 2017 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_APPCACHE_APPCACHE_REQUEST_H_
+#define CONTENT_BROWSER_APPCACHE_APPCACHE_REQUEST_H_
+
+#include "base/logging.h"
+#include "base/strings/string16.h"
+#include "base/threading/non_thread_safe.h"
+#include "content/common/content_export.h"
+#include "url/gurl.h"
+
+namespace net {
+class URLRequest;
+}
+
+namespace content {
+struct ResourceRequest;
+
+// Interface for an AppCache request. Subclasses implement this interface to
+// wrap custom request objects like URLRequest, etc to ensure that these
+// dependencies stay out of the AppCache code.
+class CONTENT_EXPORT AppCacheRequest
+    : NON_EXPORTED_BASE(public base::NonThreadSafe) {
+ public:
+  virtual ~AppCacheRequest() {}
+
+  // The URL for this request.
+  virtual const GURL& GetURL() const = 0;
+
+  // The method for this request
+  virtual const std::string& GetMethod() const = 0;
+
+  // Used for cookie policy.
+  virtual const GURL& GetFirstPartyForCookies() const = 0;
+
+  // The referrer for this request.
+  virtual const GURL GetReferrer() const = 0;
+
+  // Returns true if the request was successful.
+  virtual bool IsSuccess() const = 0;
+
+  // Returns true if the request was cancelled.
+  virtual bool IsCancelled() const = 0;
+
+  // Returns true if the request had an error.
+  virtual bool IsError() const = 0;
+
+  // Returns the HTTP response code.
+  virtual int GetResponseCode() const = 0;
+
+  // Get response header(s) by name. Returns an empty string if the header
+  // wasn't found,
+  virtual std::string GetResponseHeaderByName(
+      const std::string& name) const = 0;
+
+  // Returns true if the scheme and method are supported for AppCache.
+  static bool IsSchemeAndMethodSupportedForAppCache(
+      const AppCacheRequest* request);
+
+ protected:
+  friend class AppCacheRequestHandler;
+
+  AppCacheRequest() {}
+
+  // Getters for the request types we currently support.
+  virtual net::URLRequest* GetURLRequest();
+
+  // Returns the underlying ResourceRequest. Please note that only one of
+  // GetURLRequest() and GetResourceRequest() should return valid results.
+  virtual ResourceRequest* GetResourceRequest();
+
+  DISALLOW_COPY_AND_ASSIGN(AppCacheRequest);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_APPCACHE_APPCACHE_REQUEST_H_