Removes unused thumbnail and favicon fields from PageUsageData.

chrome/browser/history/page_usage_data.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// 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/history/page_usage_data.h"
 
 #include <algorithm>
 
-#include "third_party/skia/include/core/SkBitmap.h"
-
 PageUsageData::PageUsageData(history::URLID id)
     : id_(id),
-      thumbnail_(NULL),
-      thumbnail_set_(false),
-      thumbnail_pending_(false),
-      favicon_(NULL),
-      favicon_set_(false),
-      favicon_pending_(false),
       score_(0.0) {
 }
 
 PageUsageData::~PageUsageData() {
-  delete thumbnail_;
-  delete favicon_;
-}
-
-void PageUsageData::SetThumbnail(SkBitmap* img) {
-  if (thumbnail_ && thumbnail_ != img)
-    delete thumbnail_;
-
-  thumbnail_ = img;
-  thumbnail_set_ = true;
-}
-
-void PageUsageData::SetFavicon(SkBitmap* img) {
-  if (favicon_ && favicon_ != img)
-    delete favicon_;
-  favicon_ = img;
-  favicon_set_ = true;
 }
 
 // static
 bool PageUsageData::Predicate(const PageUsageData* lhs,
                               const PageUsageData* rhs) {
   return lhs->GetScore() > rhs->GetScore();
 }