Simplify DownloadRequestHandle by using WebContentsGetter

content/browser/download/save_package.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/download/save_package.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 113 matching lines @@
       : save_package_(save_package) {}
 
   // DownloadRequestHandleInterface
   WebContents* GetWebContents() const override {
     return save_package_.get() ? save_package_->web_contents() : NULL;
   }
   DownloadManager* GetDownloadManager() const override { return NULL; }
   void PauseRequest() const override {}
   void ResumeRequest() const override {}
   void CancelRequest() const override {}
-  std::string DebugString() const override {
-    return "SavePackage DownloadRequestHandle";
-  }
 
  private:
   base::WeakPtr<SavePackage> save_package_;
 };
 
 }  // namespace
 
 const base::FilePath::CharType SavePackage::kDefaultHtmlExtension[] =
     FILE_PATH_LITERAL("html");
 
@@ skipping 1368 matching lines @@
 
 void SavePackage::FinalizeDownloadEntry() {
   DCHECK(download_);
   DCHECK(download_manager_);
 
   download_manager_->OnSavePackageSuccessfullyFinished(download_);
   StopObservation();
 }
 
 }  // namespace content