Remove unused RenderViewHostManager::SwapInRenderViewHost() and TabContents::SwapInRenderViewHost()

content/browser/tab_contents/render_view_host_manager.h

Index: content/browser/tab_contents/render_view_host_manager.h
diff --git a/content/browser/tab_contents/render_view_host_manager.h b/content/browser/tab_contents/render_view_host_manager.h
index df33f08dffa6f0c3e3218a59df5d5f58fca00cf4..4a2e7656abcd766db4299cfaf41e29bfb127f678 100644
--- a/content/browser/tab_contents/render_view_host_manager.h
+++ b/content/browser/tab_contents/render_view_host_manager.h
@@ -185,11 +185,6 @@ class CONTENT_EXPORT RenderViewHostManager
   // Called when a RenderViewHost is about to be deleted.
   void RenderViewDeleted(RenderViewHost* rvh);
 
-  // Allows a caller to swap in a provided RenderViewHost to replace the
-  // current RenderViewHost.  The current RVH will be shutdown and ultimately
-  // deleted.
-  void SwapInRenderViewHost(RenderViewHost* rvh);
-
   // Returns whether the given RenderViewHost is on the list of swapped out
   // RenderViewHosts.
   bool IsSwappedOut(RenderViewHost* rvh);