Reland DownloadItem::Observer::OnDownloadDestroyed() replaces DownloadItem::REMOVING

chrome/browser/download/download_util.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.
 //
 // Download utility implementation
 
 #define _USE_MATH_DEFINES  // For VC++ to get M_PI. This has to be first.
 
 #include "chrome/browser/download/download_util.h"
 
@@ skipping 496 matching lines @@
     file_value->SetString("last_reason_text",
         BaseDownloadItemModel::InterruptReasonMessage(
             download->GetLastReason()));
   } else if (download->IsCancelled()) {
     file_value->SetString("state", "CANCELLED");
   } else if (download->IsComplete()) {
     if (download->GetSafetyState() == DownloadItem::DANGEROUS)
       file_value->SetString("state", "DANGEROUS");
     else
       file_value->SetString("state", "COMPLETE");
-  } else if (download->GetState() == DownloadItem::REMOVING) {
-    file_value->SetString("state", "REMOVING");
   } else {
     NOTREACHED() << "state undefined";
   }
 
   return file_value;
 }
 
 string16 GetProgressStatusText(DownloadItem* download) {
   int64 total = download->GetTotalBytes();
   int64 size = download->GetReceivedBytes();
@@ skipping 123 matching lines @@
   UMA_HISTOGRAM_ENUMERATION(
       "Download.CountsChrome", type, CHROME_DOWNLOAD_COUNT_TYPES_LAST_ENTRY);
 }
 
 void RecordDownloadSource(ChromeDownloadSource source) {
   UMA_HISTOGRAM_ENUMERATION(
       "Download.SourcesChrome", source, CHROME_DOWNLOAD_SOURCE_LAST_ENTRY);
 }
 
 }  // namespace download_util