Move topSites API out of experimental

chrome/browser/history/history_extension_api.h

 // Copyright (c) 2011 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_HISTORY_HISTORY_EXTENSION_API_H_
 #define CHROME_BROWSER_HISTORY_HISTORY_EXTENSION_API_H_
 #pragma once
 
 #include <string>
 
@@ skipping 119 matching lines @@
 
 class DeleteRangeHistoryFunction : public HistoryFunctionWithCallback {
  public:
   virtual bool RunAsyncImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME("history.deleteRange");
 
   // Callback for the history service to acknowledge deletion.
   void DeleteComplete();
 };
 
+class GetMostVisitedHistoryFunction : public HistoryFunctionWithCallback {
+ public:
+  virtual bool RunAsyncImpl() OVERRIDE;
+  DECLARE_EXTENSION_FUNCTION_NAME("history.getMostVisited");
+
+  // Callback for QueryMostVisitedURLs.
+  void QueryComplete(CancelableRequestProvider::Handle handle,
+                     history::MostVisitedURLList pages);
+
+  // We need a consumer for QueryMostVisitedURLs.
+  CancelableRequestConsumer history_consumer_;
+};
+
 #endif  // CHROME_BROWSER_HISTORY_HISTORY_EXTENSION_API_H_