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diff --git a/chromium/extensions/browser/api/runtime/runtime_api_delegate.h b/chromium/extensions/browser/api/runtime/runtime_api_delegate.h
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index 00000000000..21e9a6e271c
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+++ b/chromium/extensions/browser/api/runtime/runtime_api_delegate.h
@@ -0,0 +1,82 @@
+// Copyright 2014 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 EXTENSIONS_BROWSER_API_RUNTIME_RUNTIME_API_DELEGATE_H
+#define EXTENSIONS_BROWSER_API_RUNTIME_RUNTIME_API_DELEGATE_H
+
+#include "base/callback.h"
+#include "base/version.h"
+
+class GURL;
+
+namespace extensions {
+
+namespace api {
+namespace runtime {
+struct PlatformInfo;
+}
+}
+
+class Extension;
+class UpdateObserver;
+
+// This is a delegate interface for chrome.runtime API behavior. Clients must
+// vend some implementation of this interface through
+// ExtensionsBrowserClient::CreateRuntimeAPIDelegate.
+class RuntimeAPIDelegate {
+ public:
+  struct UpdateCheckResult {
+    bool success;
+    std::string response;
+    std::string version;
+
+    UpdateCheckResult(bool success,
+                      const std::string& response,
+                      const std::string& version);
+  };
+
+  virtual ~RuntimeAPIDelegate() {}
+
+  // The callback given to RequestUpdateCheck.
+  typedef base::Callback<void(const UpdateCheckResult&)> UpdateCheckCallback;
+
+  // Registers an UpdateObserver on behalf of the runtime API.
+  virtual void AddUpdateObserver(UpdateObserver* observer) = 0;
+
+  // Unregisters an UpdateObserver on behalf of the runtime API.
+  virtual void RemoveUpdateObserver(UpdateObserver* observer) = 0;
+
+  // Determines an extension's previously installed version if applicable.
+  virtual base::Version GetPreviousExtensionVersion(
+      const Extension* extension) = 0;
+
+  // Reloads an extension.
+  virtual void ReloadExtension(const std::string& extension_id) = 0;
+
+  // Requests an extensions update update check. Returns |false| if updates
+  // are disabled. Otherwise |callback| is called with the result of the
+  // update check.
+  virtual bool CheckForUpdates(const std::string& extension_id,
+                               const UpdateCheckCallback& callback) = 0;
+
+  // Navigates the browser to a URL on behalf of the runtime API.
+  virtual void OpenURL(const GURL& uninstall_url) = 0;
+
+  // Populates platform info to be provided by the getPlatformInfo function.
+  // Returns false iff no info is provided.
+  virtual bool GetPlatformInfo(api::runtime::PlatformInfo* info) = 0;
+
+  // Request a restart of the host device. Returns false iff the device
+  // will not be restarted.
+  virtual bool RestartDevice(std::string* error_message) = 0;
+
+  // Open |extension|'s options page, if it has one. Returns true if an
+  // options page was opened, false otherwise. See the docs of the
+  // chrome.runtime.openOptionsPage function for the gritty details.
+  virtual bool OpenOptionsPage(const Extension* extension);
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_API_RUNTIME_RUNTIME_API_DELEGATE_H