Add a NavigationThrottle to the public content/ interface

content/test/test_navigation_handle.h

Index: content/test/test_navigation_handle.h
diff --git a/content/test/test_navigation_handle.h b/content/test/test_navigation_handle.h
new file mode 100644
index 0000000000000000000000000000000000000000..4f45842543f3c8034de268ea985b0fcd48d44bfa
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+++ b/content/test/test_navigation_handle.h
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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_TEST_TEST_NAVIGATION_HANDLE_H_
+#define CONTENT_TEST_TEST_NAVIGATION_HANDLE_H_
+
+#include <string>
+
+#include "content/browser/frame_host/navigation_handle_impl.h"
+#include "content/public/test/navigation_handle_tester.h"
+
+namespace content {
+
+// A test version of the NavigationHandle that can be used to simulate various
+// navigation call sby embedders of content/.
+class TestNavigationHandle : public NavigationHandleImpl,
+                             public NavigationHandleTester {
+ public:
+  ~TestNavigationHandle() override;
+
+  static TestNavigationHandle* Create(const GURL& url,
+                                      const GURL& validated_url,
+                                      const bool is_main_frame,
+                                      NavigatorDelegate* delegate);
+
+  // NavigationHandlerTester implementation.
+  NavigationThrottle::ThrottleCheckResult SimulateWillStartRequest(
+      bool is_post,
+      const Referrer& sanitized_referrer,
+      bool has_user_gesture,
+      ui::PageTransition transition,
+      bool is_external_protocol) override;
+  NavigationThrottle::ThrottleCheckResult SimulateWillRedirectRequest(
+      const GURL& new_url,
+      const GURL& new_validated_url,
+      bool new_method_is_post,
+      const GURL& new_referrer_url,
+      bool new_is_external_protocol) override;
+
+ private:
+  TestNavigationHandle(const GURL& url,
+                       const GURL& validated_url,
+                       const bool is_main_frame,
+                       NavigatorDelegate* delegate);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_TEST_TEST_NAVIGATION_HANDLE_H_