Replace NULL with nullptr.

extensions/browser/api/cast_channel/cast_channel_api.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_CAST_CHANNEL_CAST_CHANNEL_API_H_
 #define EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_CHANNEL_API_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 41 matching lines @@
   // CastSockets and make this class the sole owner of Logger.
   // Alternatively,
   // consider making Logger not ref-counted by passing a weak
   // reference of Logger to the CastSockets instead.
   scoped_refptr<cast_channel::Logger> GetLogger();
 
   // Sets the CastSocket instance to be used for testing.
   void SetSocketForTest(scoped_ptr<cast_channel::CastSocket> socket_for_test);
 
   // Returns a test CastSocket instance, if it is defined.
-  // Otherwise returns a scoped_ptr with a NULL ptr value.
+  // Otherwise returns a scoped_ptr with a nullptr value.
   scoped_ptr<cast_channel::CastSocket> GetSocketForTest();
 
   // Returns the API browser context.
   content::BrowserContext* GetBrowserContext() const;
 
  private:
   friend class BrowserContextKeyedAPIFactory<CastChannelAPI>;
   friend class ::CastChannelAPITest;
   friend class CastTransportDelegate;
 
@@ skipping 86 matching lines @@
     DISALLOW_COPY_AND_ASSIGN(CastMessageHandler);
   };
 
   // Parses the cast:// or casts:// |url|, fills |connect_info| with the
   // corresponding details, and returns true. Returns false if |url| is not a
   // valid Cast URL.
   static bool ParseChannelUrl(const GURL& url,
                               cast_channel::ConnectInfo* connect_info);
 
   // Validates that |connect_info| represents a valid IP end point and returns a
-  // new IPEndPoint if so.  Otherwise returns NULL.
+  // new IPEndPoint if so.  Otherwise returns nullptr.
   static net::IPEndPoint* ParseConnectInfo(
       const cast_channel::ConnectInfo& connect_info);
 
   void OnOpen(cast_channel::ChannelError result);
 
   scoped_ptr<cast_channel::Open::Params> params_;
   // The id of the newly opened socket.
   int new_channel_id_;
   CastChannelAPI* api_;
   scoped_ptr<cast_channel::ConnectInfo> connect_info_;
@@ skipping 83 matching lines @@
                              CAST_CHANNEL_SETAUTHORITYKEYS)
 
   scoped_ptr<cast_channel::SetAuthorityKeys::Params> params_;
 
   DISALLOW_COPY_AND_ASSIGN(CastChannelSetAuthorityKeysFunction);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_CHANNEL_API_H_