When the download folder does not exist, change the download folder to a user's "Downloads"

chrome/browser/download/download_file_manager.cc

 // Copyright (c) 2011 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 "chrome/browser/download/download_file_manager.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/stl_util-inl.h"
 #include "base/task.h"
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/download/download_create_info.h"
 #include "chrome/browser/download/download_manager.h"
+#include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/download/download_request_handle.h"
 #include "chrome/browser/download/download_util.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "content/browser/browser_thread.h"
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
@@ skipping 23 matching lines @@
       BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(this, &DownloadFileManager::OnShutdown));
 }
 
 void DownloadFileManager::OnShutdown() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   StopUpdateTimer();
   STLDeleteValues(&downloads_);
 }
 
-void DownloadFileManager::CreateDownloadFile(DownloadCreateInfo* info,
-                                             DownloadManager* download_manager,
-                                             bool get_hash) {
+void DownloadFileManager::CreateDownloadFile(
+    DownloadCreateInfo* info, DownloadManager* download_manager,
+    bool get_hash, const FilePath& default_download_dir) {
   DCHECK(info);
   VLOG(20) << __FUNCTION__ << "()" << " info = " << info->DebugString();
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 
   // Life of |info| ends here. No more references to it after this method.
   scoped_ptr<DownloadCreateInfo> infop(info);
 
   scoped_ptr<DownloadFile>
       download_file(new DownloadFile(info, download_manager));
-  if (!download_file->Initialize(get_hash)) {
+  if (!download_file->Initialize(get_hash, default_download_dir)) {
     info->request_handle.CancelRequest();
     return;
   }
 
   int32 id = info->download_id;
   DCHECK(GetDownloadFile(id) == NULL);
   downloads_[id] = download_file.release();
 
   // The file is now ready, we can un-pause the request and start saving data.
   info->request_handle.ResumeRequest();
@@ skipping 57 matching lines @@
     return;
   }
 
   // TODO(phajdan.jr): fix the duplication of path info below.
   info->path = info->save_info.file_path;
 
   manager->CreateDownloadItem(info);
 
   bool hash_needed = g_browser_process->safe_browsing_service()->
       DownloadBinHashNeeded();
+  FilePath default_download_dir =
+      manager->download_prefs()->GetDefaultDownloadDirectory();
 
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(this, &DownloadFileManager::CreateDownloadFile,
-                        info, make_scoped_refptr(manager), hash_needed));
+                        info, make_scoped_refptr(manager),
+                        hash_needed, default_download_dir));
 }
 
 // We don't forward an update to the UI thread here, since we want to throttle
 // the UI update rate via a periodic timer. If the user has cancelled the
 // download (in the UI thread), we may receive a few more updates before the IO
 // thread gets the cancel message: we just delete the data since the
 // DownloadFile has been deleted.
 void DownloadFileManager::UpdateDownload(int id, DownloadBuffer* buffer) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   std::vector<DownloadBuffer::Contents> contents;
@@ skipping 104 matching lines @@
   }
 }
 
 // Actions from the UI thread and run on the download thread
 
 // The DownloadManager in the UI thread has provided an intermediate .crdownload
 // name for the download specified by 'id'. Rename the in progress download.
 //
 // There are 2 possible rename cases where this method can be called:
 // 1. tmp -> foo.crdownload (not final, safe)
-// 2. tmp-> Unconfirmed.xxx.crdownload (not final, dangerous)
+// 2. tmp -> Unconfirmed.xxx.crdownload (not final, dangerous)
 void DownloadFileManager::RenameInProgressDownloadFile(
     int id, const FilePath& full_path) {
   VLOG(20) << __FUNCTION__ << "()" << " id = " << id
            << " full_path = \"" << full_path.value() << "\"";
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 
   DownloadFile* download_file = GetDownloadFile(id);
   if (!download_file)
     return;
 
@@ skipping 104 matching lines @@
            << " id = " << id
            << " download_file = " << download_file->DebugString();
 
   downloads_.erase(id);
 
   delete download_file;
 
   if (downloads_.empty())
     StopUpdateTimer();
 }