Support Service Worker NavigationPreload with PlzNavigate.

content/public/browser/render_process_host.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 CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 316 matching lines @@
   virtual void PurgeAndSuspend() = 0;
 
   // Resumes the renderer process.
   virtual void Resume() = 0;
 
   // Acquires the |mojom::Renderer| interface to the render process. This is for
   // internal use only, and is only exposed here to support
   // MockRenderProcessHost usage in tests.
   virtual mojom::Renderer* GetRendererInterface() = 0;
 
+  // Returns the ResourceMessageFilter of the process. This is used to send
+  // service worker navigation requests when PlzNavigate is enabled. Only
+  // exposed here to support MockRenderProcessHost usage in tests.
+  virtual BrowserMessageFilter* GetResourceMessageFilter() = 0;
+
   // Returns the current number of active views in this process.  Excludes
   // any RenderViewHosts that are swapped out.
   size_t GetActiveViewCount();
 
   // Static management functions -----------------------------------------------
 
   // Flag to run the renderer in process.  This is primarily
   // for debugging purposes.  When running "in process", the
   // browser maintains a single RenderProcessHost which communicates
   // to a RenderProcess which is instantiated in the same process
@@ skipping 42 matching lines @@
   static void SetMaxRendererProcessCount(size_t count);
 
   // Returns the current maximum number of renderer process hosts kept by the
   // content module.
   static size_t GetMaxRendererProcessCount();
 };
 
 }  // namespace content.
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_