Revert of Cache the current WebPreferences on RenderViewHostImpl.

content/browser/renderer_host/render_view_host_delegate.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 "content/browser/renderer_host/render_view_host_delegate.h"
 
 #include "content/public/common/web_preferences.h"
 #include "url/gurl.h"
 
 namespace content {
 
 RenderViewHostDelegateView* RenderViewHostDelegate::GetDelegateView() {
   return NULL;
 }
 
 bool RenderViewHostDelegate::OnMessageReceived(RenderViewHost* render_view_host,
                                                const IPC::Message& message) {
   return false;
 }
 
 WebContents* RenderViewHostDelegate::GetAsWebContents() {
   return NULL;
 }
 
-WebPreferences RenderViewHostDelegate::ComputeWebkitPrefs() {
+WebPreferences RenderViewHostDelegate::GetWebkitPrefs() {
   return WebPreferences();
 }
 
 bool RenderViewHostDelegate::IsFullscreenForCurrentTab() const {
   return false;
 }
 
 SessionStorageNamespace* RenderViewHostDelegate::GetSessionStorageNamespace(
     SiteInstance* instance) {
   return NULL;
 }
 
 SessionStorageNamespaceMap
 RenderViewHostDelegate::GetSessionStorageNamespaceMap() {
   return SessionStorageNamespaceMap();
 }
 
 FrameTree* RenderViewHostDelegate::GetFrameTree() {
   return NULL;
 }
 
 bool RenderViewHostDelegate::IsNeverVisible() {
   return false;
 }
 
 }  // namespace content