Move chrome-specific SerializedNavigation code to chrome/.

chrome/browser/sessions/chrome_serialized_navigation_driver.h

+// Copyright 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 CHROME_BROWSER_SESSIONS_CHROME_SERIALIZED_NAVIGATION_DRIVER_H_
+#define CHROME_BROWSER_SESSIONS_CHROME_SERIALIZED_NAVIGATION_DRIVER_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "components/sessions/content/content_serialized_navigation_driver.h"
+
+namespace base {
+template <typename T>
+struct DefaultSingletonTraits;
+}
+
+// Provides an implementation of ContentSerializedNavigationDriver that knows
+// about chrome/ specifics.
+class ChromeSerializedNavigationDriver
+    : public sessions::ContentSerializedNavigationDriver {
+ public:
+  ~ChromeSerializedNavigationDriver() override;
+
+  // Returns the singleton ChromeSerializedNavigationDriver.  Almost all
+  // callers should use SerializedNavigationDriver::Get() instead.
+  static ChromeSerializedNavigationDriver* GetInstance();
+
+  // sessions::ContentSerializedNavigationDriver implementation.
+  void Sanitize(sessions::SerializedNavigationEntry* navigation) const override;
+
+ private:
+  friend struct base::DefaultSingletonTraits<ChromeSerializedNavigationDriver>;
+
+  ChromeSerializedNavigationDriver();
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeSerializedNavigationDriver);
+};
+
+#endif  // CHROME_BROWSER_SESSIONS_CHROME_SERIALIZED_NAVIGATION_DRIVER_H_