[Extensions] Implement chrome.runtime.openOptionsPage.

extensions/browser/api/runtime/runtime_api_delegate.h

 // 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"
 
@@ skipping 52 matching lines @@
   // 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(core_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