Cleanup: Put more chrome/ code behind ENABLE_EXTENSIONS ifdefs.

chrome/renderer/chrome_mock_render_thread.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_RENDERER_CHROME_MOCK_RENDER_THREAD_H_
 #define CHROME_RENDERER_CHROME_MOCK_RENDER_THREAD_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 43 matching lines @@
 
   // Get the number of pages to generate for print preview.
   int print_preview_pages_remaining() const;
 #endif
 
  private:
   // Overrides base class implementation to add custom handling for
   // print and extensions.
   virtual bool OnMessageReceived(const IPC::Message& msg) override;
 
+#if defined(ENABLE_EXTENSIONS)
   // The callee expects to be returned a valid channel_id.
   void OnOpenChannelToExtension(int routing_id,
                                 const ExtensionMsg_ExternalConnectionInfo& info,
                                 const std::string& channel_name,
                                 bool include_tls_channel_id,
                                 int* port_id);
+#endif
 
 #if defined(ENABLE_PRINTING)
 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
   void OnAllocateTempFileForPrinting(int render_view_id,
                                      base::FileDescriptor* renderer_fd,
                                      int* browser_fd);
   void OnTempFileForPrintingWritten(int render_view_id, int browser_fd);
 #endif
 
   // PrintWebViewHelper expects default print settings.
@@ skipping 32 matching lines @@
   // Number of pages to generate for print preview.
   int print_preview_pages_remaining_;
 #endif
 
   scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMockRenderThread);
 };
 
 #endif  // CHROME_RENDERER_CHROME_MOCK_RENDER_THREAD_H_