Implement chrome.experimental.downloads.search()

content/browser/download/download_manager.cc

Index: content/browser/download/download_manager.cc
diff --git a/content/browser/download/download_manager.cc b/content/browser/download/download_manager.cc
index 0a9337cf5327e003c6f093bcc60e3bbc4a2bdc72..29b8f22cd2cc60864dca855845c36ffe8e74f6e2 100644
--- a/content/browser/download/download_manager.cc
+++ b/content/browser/download/download_manager.cc
@@ -25,6 +25,7 @@
 #include "content/browser/download/download_item.h"
 #include "content/browser/download/download_manager_delegate.h"
 #include "content/browser/download/download_persistent_store_info.h"
+#include "content/browser/download/download_query.h"
 #include "content/browser/download/download_status_updater.h"
 #include "content/browser/download/interrupt_reasons.h"
 #include "content/browser/renderer_host/render_process_host.h"
@@ -173,6 +174,18 @@ void DownloadManager::GetAllDownloads(
   }
 }
 
+void DownloadManager::Search(const download_util::DownloadQuery& query,
+                             DownloadVector* results) const {
+  CHECK(results);
+  results->clear();
+  DownloadVector all_items;
+  for (DownloadSet::const_iterator it = downloads_.begin();
+       it != downloads_.end(); ++it) {
+    all_items.push_back(*it);
+  }
+  query.Search(all_items, results);
+}
+
 void DownloadManager::SearchDownloads(const string16& query,
                                       DownloadVector* result) {
   string16 query_lower(base::i18n::ToLower(query));
@@ -825,7 +838,7 @@ void DownloadManager::OnPersistentStoreQueryComplete(
   largest_db_handle_in_history_ = 0;
 
   for (size_t i = 0; i < entries->size(); ++i) {
-    DownloadItem* download = new DownloadItem(this, entries->at(i));
+    DownloadItem* download = new DownloadItem(this, entries->at(i), -1 - i);
     // TODO(rdsmith): Remove after http://crbug.com/85408 resolved.
     CHECK(!ContainsKey(history_downloads_, download->db_handle()));
     downloads_.insert(download);