Factor out the test web contents from the WebContents unit test so that it ca...

chrome/browser/renderer_host/render_process_host.h

 // Copyright (c) 2009 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_RENDERER_HOST_RENDER_PROCESS_HOST_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_H_
 
 #include "base/basictypes.h"
 #include "base/id_map.h"
 #include "base/process.h"
@@ skipping 182 matching lines @@
 
   // set of listeners that expect the renderer process to close
   std::set<int> listeners_expecting_close_;
 
   // See getter above.
   static bool run_renderer_in_process_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderProcessHost);
 };
 
+// Factory object for RenderProcessHosts. Using this factory allows tests to
+// swap out a different one to use a TestRenderProcessHost.
+class RenderProcessHostFactory {
+ public:
+  virtual ~RenderProcessHostFactory() {}
+  virtual RenderProcessHost* CreateRenderProcessHost(
+      Profile* profile) const = 0;
+};
+
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_H_