Fix history importing by delaying DownloadManager creation.

content/browser/download/download_file_manager.cc

Index: content/browser/download/download_file_manager.cc
diff --git a/content/browser/download/download_file_manager.cc b/content/browser/download/download_file_manager.cc
index e6ecc9f81d49118e9e0b8301cba279c05d6eae05..b3fdb0843b51f03b44449d61b6aab497d589c49b 100644
--- a/content/browser/download/download_file_manager.cc
+++ b/content/browser/download/download_file_manager.cc
@@ -67,9 +67,8 @@ void DownloadFileManager::CreateDownloadFile(
     return;
   }
 
-  DownloadId global_id(download_manager, info->download_id);
-  DCHECK(GetDownloadFile(global_id) == NULL);
-  downloads_[global_id] = download_file.release();
+  DCHECK(GetDownloadFile(info->download_id) == NULL);
+  downloads_[info->download_id] = download_file.release();
 
   // The file is now ready, we can un-pause the request and start saving data.
   request_handle.ResumeRequest();
@@ -79,7 +78,8 @@ void DownloadFileManager::CreateDownloadFile(
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       NewRunnableMethod(download_manager,
-                        &DownloadManager::StartDownload, info->download_id));
+                        &DownloadManager::StartDownload,
+                        info->download_id.local()));
 }
 
 DownloadFile* DownloadFileManager::GetDownloadFile(DownloadId global_id) {
@@ -290,7 +290,7 @@ void DownloadFileManager::OnDownloadManagerShutdown(DownloadManager* manager) {
 
   for (std::set<DownloadFile*>::iterator i = to_remove.begin();
        i != to_remove.end(); ++i) {
-    downloads_.erase(DownloadId((*i)->GetDownloadManager(), (*i)->id()));
+    downloads_.erase((*i)->global_id());
     delete *i;
   }
 }