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+// 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 CONTENT_BROWSER_LOADER_NAVIGATION_RESOURCE_THROTTLE_H_
+#define CONTENT_BROWSER_LOADER_NAVIGATION_RESOURCE_THROTTLE_H_
+
+#include "base/basictypes.h"
+#include "base/memory/weak_ptr.h"
+#include "content/public/browser/navigation_throttle.h"
+#include "content/public/browser/resource_throttle.h"
+
+namespace net {
+class URLRequest;
+}
+
+namespace content {
+
+// This ResourceThrottle is used to convey throttling information to the UI
+// thread during navigations. The UI thread can then use its NavigationThrottle
+// mechanism to interact with the navigation.
+class NavigationResourceThrottle : public ResourceThrottle {
+ public:
+ NavigationResourceThrottle(net::URLRequest* request);
+ ~NavigationResourceThrottle() override;
+
+ // ResourceThrottle overrides:
+ void WillStartRequest(bool* defer) override;
+ void WillRedirectRequest(const net::RedirectInfo& redirect_info,
+ bool* defer) override;
+ const char* GetNameForLogging() const override;
+
+ private:
+ void OnUIChecksPerformed(NavigationThrottle::ThrottleCheckResult result);
+
+ net::URLRequest* request_;
+ base::WeakPtrFactory<NavigationResourceThrottle> weak_ptr_factory_;
+
+ DISALLOW_COPY_AND_ASSIGN(NavigationResourceThrottle);
+};
+
+} // namespace content
+
+#endif // CONTENT_BROWSER_LOADER_NAVIGATION_RESOURCE_THROTTLE_H_