Revert 284592 "Cache the current WebPreferences on RenderViewHos..."

content/browser/frame_host/interstitial_page_impl.cc

Index: content/browser/frame_host/interstitial_page_impl.cc
===================================================================
--- content/browser/frame_host/interstitial_page_impl.cc	(revision 286686)
+++ content/browser/frame_host/interstitial_page_impl.cc	(working copy)
@@ -509,11 +509,11 @@
   return renderer_preferences_;
 }
 
-WebPreferences InterstitialPageImpl::ComputeWebkitPrefs() {
+WebPreferences InterstitialPageImpl::GetWebkitPrefs() {
   if (!enabled())
     return WebPreferences();
 
-  return render_view_host_->ComputeWebkitPrefs(url_);
+  return render_view_host_->GetWebkitPrefs(url_);
 }
 
 void InterstitialPageImpl::RenderWidgetDeleted(