Move downloads API to extensions namespace

chrome/browser/download/download_history.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.
 
 // DownloadHistory manages persisting DownloadItems to the history service by
 // observing a single DownloadManager and all its DownloadItems using an
 // AllDownloadItemNotifier.
 //
 // DownloadHistory decides whether and when to add items to, remove items from,
 // and update items in the database. DownloadHistory uses DownloadHistoryData to
@@ skipping 84 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(DownloadHistoryData);
 };
 
 const char DownloadHistoryData::kKey[] =
   "DownloadItem DownloadHistoryData";
 
 history::DownloadRow GetDownloadRow(
     content::DownloadItem* item) {
   std::string by_ext_id, by_ext_name;
 #if !defined(OS_ANDROID)
-  DownloadedByExtension* by_ext = DownloadedByExtension::Get(item);
+  extensions::DownloadedByExtension* by_ext =
+      extensions::DownloadedByExtension::Get(item);
   if (by_ext) {
     by_ext_id = by_ext->id();
     by_ext_name = by_ext->name();
   }
 #endif
 
   return history::DownloadRow(
       item->GetFullPath(),
       item->GetTargetFilePath(),
       item->GetUrlChain(),
@@ skipping 124 matching lines @@
         it->etag,
         it->last_modified,
         it->received_bytes,
         it->total_bytes,
         it->state,
         it->danger_type,
         it->interrupt_reason,
         it->opened);
 #if !defined(OS_ANDROID)
     if (!it->by_ext_id.empty() && !it->by_ext_name.empty()) {
-      new DownloadedByExtension(item, it->by_ext_id, it->by_ext_name);
+      new extensions::DownloadedByExtension(
+          item, it->by_ext_id, it->by_ext_name);
       item->UpdateObservers();
     }
 #endif
     DCHECK_EQ(DownloadHistoryData::Get(item)->state(),
               DownloadHistoryData::PERSISTED);
     ++history_size_;
   }
   notifier_.GetManager()->CheckForHistoryFilesRemoval();
 }
 
@@ skipping 161 matching lines @@
   removing_ids_.insert(download_id);
 }
 
 void DownloadHistory::RemoveDownloadsBatch() {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   IdSet remove_ids;
   removing_ids_.swap(remove_ids);
   history_->RemoveDownloads(remove_ids);
   FOR_EACH_OBSERVER(Observer, observers_, OnDownloadsRemoved(remove_ids));
 }