Remove TopSites::IsEnabled() as well as related dead code.

chrome/browser/tab_contents/tab_contents.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/tab_contents/tab_contents.h"
 
 #include <cmath>
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
@@ skipping 2697 matching lines @@
     delegate()->UpdateTargetURL(this, url);
 }
 
 void TabContents::UpdateThumbnail(const GURL& url,
                                   const SkBitmap& bitmap,
                                   const ThumbnailScore& score) {
   if (profile()->IsOffTheRecord())
     return;
 
   // Tell History about this thumbnail
-  if (history::TopSites::IsEnabled()) {
-    history::TopSites* ts = profile()->GetTopSites();
-    if (ts)
-      ts->SetPageThumbnail(url, bitmap, score);
-  } else {
-    HistoryService* hs =
-        profile()->GetHistoryService(Profile::IMPLICIT_ACCESS);
-    if (hs)
-      hs->SetPageThumbnail(url, bitmap, score);
-  }
+  history::TopSites* ts = profile()->GetTopSites();
+  if (ts)
+    ts->SetPageThumbnail(url, bitmap, score);
 }
 
 void TabContents::UpdateInspectorSetting(const std::string& key,
                                          const std::string& value) {
   RenderViewHostDelegateHelper::UpdateInspectorSetting(profile(), key, value);
 }
 
 void TabContents::ClearInspectorSettings() {
   RenderViewHostDelegateHelper::ClearInspectorSettings(profile());
 }
@@ skipping 640 matching lines @@
 }
 
 void TabContents::SwapInRenderViewHost(RenderViewHost* rvh) {
   render_manager_.SwapInRenderViewHost(rvh);
 }
 
 void TabContents::CreateViewAndSetSizeForRVH(RenderViewHost* rvh) {
   RenderWidgetHostView* rwh_view = view()->CreateViewForWidget(rvh);
   rwh_view->SetSize(view()->GetContainerSize());
 }