Move history extension API implementation to history dir.

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_EXTENSIONS_EXTENSION_HISTORY_API_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_HISTORY_API_H_
+#ifndef CHROME_BROWSER_HISTORY_HISTORY_EXTENSION_API_H_
+#define CHROME_BROWSER_HISTORY_HISTORY_EXTENSION_API_H_
 #pragma once
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/extensions/extension_function.h"
 #include "chrome/browser/history/history.h"
 #include "chrome/browser/history/history_notifications.h"
 #include "content/public/browser/notification_registrar.h"
 
 // Observes History service and routes the notifications as events to the
 // extension system.
-class ExtensionHistoryEventRouter : public content::NotificationObserver {
+class HistoryExtensionEventRouter : public content::NotificationObserver {
  public:
-  explicit ExtensionHistoryEventRouter();
-  virtual ~ExtensionHistoryEventRouter();
+  explicit HistoryExtensionEventRouter();
+  virtual ~HistoryExtensionEventRouter();
 
   void ObserveProfile(Profile* profile);
 
  private:
   // content::NotificationObserver::Observe.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   void HistoryUrlVisited(Profile* profile,
                          const history::URLVisitedDetails* details);
 
   void HistoryUrlsRemoved(Profile* profile,
                           const history::URLsDeletedDetails* details);
 
   void DispatchEvent(Profile* profile,
                      const char* event_name,
                      const std::string& json_args);
 
   // Used for tracking registrations to history service notifications.
   content::NotificationRegistrar registrar_;
 
-  DISALLOW_COPY_AND_ASSIGN(ExtensionHistoryEventRouter);
+  DISALLOW_COPY_AND_ASSIGN(HistoryExtensionEventRouter);
 };
 
 
 // Base class for history function APIs.
 class HistoryFunction : public AsyncExtensionFunction {
  public:
   virtual void Run() OVERRIDE;
   virtual bool RunImpl() = 0;
 
   bool GetUrlFromValue(base::Value* value, GURL* url);
@@ skipping 74 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();
 };
 
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_HISTORY_API_H_
+#endif  // CHROME_BROWSER_HISTORY_HISTORY_EXTENSION_API_H_