Extract minimal RenderViewHost interface for embedders, leaving

chrome/browser/autocomplete/autocomplete_edit.cc

 // 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.
 
 #include "chrome/browser/autocomplete/autocomplete_edit.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/metrics/histogram.h"
@@ skipping 1102 matching lines @@
   // instance if the tab has been closed or on return from a sleep state
   // (http://crbug.com/105689)
   TabContentsWrapper* tab = controller_->GetTabContentsWrapper();
   if (!tab)
     return;
   prerender::PrerenderManager* prerender_manager =
       prerender::PrerenderManagerFactory::GetForProfile(tab->profile());
   if (prerender_manager) {
     RenderViewHost* current_host = tab->web_contents()->GetRenderViewHost();
     prerender_manager->AddPrerenderFromOmnibox(
-        match.destination_url, current_host->session_storage_namespace());
+        match.destination_url, current_host->GetSessionStorageNamespace());
   }
 }
 
 void AutocompleteEditModel::DoPreconnect(const AutocompleteMatch& match) {
   if (!match.destination_url.SchemeIs(chrome::kExtensionScheme)) {
     // Warm up DNS Prefetch cache, or preconnect to a search service.
     UMA_HISTOGRAM_ENUMERATION("Autocomplete.MatchType", match.type,
                               AutocompleteMatch::NUM_TYPES);
     if (profile_->GetNetworkPredictor()) {
       profile_->GetNetworkPredictor()->AnticipateOmniboxUrl(
           match.destination_url,
           NetworkActionPredictor::IsPreconnectable(match));
     }
     // We could prefetch the alternate nav URL, if any, but because there
     // can be many of these as a user types an initial series of characters,
     // the OS DNS cache could suffer eviction problems for minimal gain.
   }
 }
 
 //  static
 bool AutocompleteEditModel::IsSpaceCharForAcceptingKeyword(wchar_t c) {
   switch (c) {
     case 0x0020:  // Space
     case 0x3000:  // Ideographic Space
       return true;
     default:
       return false;
   }
 }