Fix some unit_tests under PlzNavigate

content/browser/frame_host/render_frame_host_manager.h

 // Copyright 2013 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_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_
 
 #include <stdint.h>
 
 #include <list>
@@ skipping 506 matching lines @@
   // Sets up the necessary state for a new RenderViewHost.  If |proxy| is not
   // null, it creates a RenderFrameProxy in the target renderer process which is
   // used to route IPC messages when in swapped out state.  Returns early if the
   // RenderViewHost has already been initialized for another RenderFrameHost.
   bool InitRenderView(RenderViewHostImpl* render_view_host,
     RenderFrameProxyHost* proxy);
 
  private:
   friend class NavigatorTestWithBrowserSideNavigation;
   friend class RenderFrameHostManagerTest;
+  friend class RenderFrameHostTester;
   friend class TestWebContents;
 
   enum class SiteInstanceRelation {
     // A SiteInstance in a different browsing instance from the current.
     UNRELATED,
     // A SiteInstance in the same browsing instance as the current.
     RELATED,
     // The default subframe SiteInstance for the current browsing instance.
     RELATED_DEFAULT_SUBFRAME,
   };
@@ skipping 276 matching lines @@
   std::unique_ptr<RenderFrameHostImpl> speculative_render_frame_host_;
 
   base::WeakPtrFactory<RenderFrameHostManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_