Add API in developerPrivate to allow/ disallow incognito mode.

chrome/browser/extensions/api/developer_private/developer_private_api.h

 // Copyright (c) 2012 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_API_DEVELOPER_PRIVATE_DEVELOPER_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_DEVELOPER_PRIVATE_API_H_
 
 #include "chrome/browser/extensions/api/developer_private/entry_picker.h"
 #include "chrome/browser/extensions/api/file_system/file_system_api.h"
 #include "chrome/browser/extensions/extension_function.h"
@@ skipping 145 matching lines @@
   DECLARE_EXTENSION_FUNCTION("developerPrivate.allowFileAccess",
                              DEVELOPERPRIVATE_ALLOWFILEACCESS);
 
  protected:
   virtual ~DeveloperPrivateAllowFileAccessFunction();
 
   // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
 };
 
+class DeveloperPrivateAllowIncognitoFunction : public SyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("developerPrivate.allowIncognito",
+                             DEVELOPERPRIVATE_ALLOWINCOGNITO);
+
+ protected:
+  virtual ~DeveloperPrivateAllowIncognitoFunction();
+
+  // ExtensionFunction:
+  virtual bool RunImpl() OVERRIDE;
+};
+
 class DeveloperPrivateReloadFunction : public SyncExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("developerPrivate.reload",
                              DEVELOPERPRIVATE_RELOAD);
 
  protected:
   virtual ~DeveloperPrivateReloadFunction();
 
   // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
@@ skipping 117 matching lines @@
 
    // ExtensionFunction
    virtual bool RunImpl() OVERRIDE;
 };
 
 }  // namespace api
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_DEVELOPER_PRIVATE_API_H_