Create CoreTabHelper, move remaining core TCW functionality into it.

chrome/browser/prerender/prerender_tab_helper.cc

 // Copyright (c) 2011 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/prerender/prerender_tab_helper.h"
 
 #include "base/metrics/histogram.h"
 #include "base/string_number_conversions.h"
 #include "base/time.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "content/browser/tab_contents/tab_contents.h"
 
 namespace prerender {
 
 namespace {
 
 const int kMinHoverThresholdsMs[] = {
   250
 };
@@ skipping 153 matching lines @@
 PrerenderTabHelper::~PrerenderTabHelper() {
 }
 
 void PrerenderTabHelper::ProvisionalChangeToMainFrameUrl(
     const GURL& url,
     const GURL& opener_url) {
   url_ = url;
   RecordPageviewEvent(PAGEVIEW_EVENT_NEW_URL);
   if (IsTopSite(url))
     RecordPageviewEvent(PAGEVIEW_EVENT_TOP_SITE_NEW_URL);
-  if (!tab_->delegate())
+  if (!tab_->core_tab_helper()->delegate())
     return;  // PrerenderManager needs a delegate to handle the swap.
   PrerenderManager* prerender_manager = MaybeGetPrerenderManager();
   if (!prerender_manager)
     return;
   if (prerender_manager->IsTabContentsPrerendering(tab_contents()))
     return;
   prerender_manager->MarkTabContentsAsNotPrerendered(tab_contents());
   MaybeUsePrerenderedPage(url, opener_url);
 }
 
@@ skipping 104 matching lines @@
 
   current_hover_url_ = GURL();
 }
 
 bool PrerenderTabHelper::IsTopSite(const GURL& url) {
   PrerenderManager* pm = MaybeGetPrerenderManager();
   return (pm && pm->IsTopSite(url));
 }
 
 }  // namespace prerender