GData save package support with MHTML.

chrome/browser/chromeos/gdata/gdata_download_observer.cc

Index: chrome/browser/chromeos/gdata/gdata_download_observer.cc
===================================================================
--- chrome/browser/chromeos/gdata/gdata_download_observer.cc	(revision 128956)
+++ chrome/browser/chromeos/gdata/gdata_download_observer.cc	(working copy)
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/chromeos/gdata/gdata_download_observer.h"
 
+#include "base/file_util.h"
 #include "chrome/browser/chromeos/gdata/gdata_uploader.h"
 #include "chrome/browser/chromeos/gdata/gdata_upload_file_info.h"
 #include "chrome/browser/chromeos/gdata/gdata_util.h"
@@ -153,6 +154,20 @@
   return -1;
 }
 
+// |gdata_tmp_download_path| is set to a temporary local download path in
+// ~/GCache/v1/tmp/downloads/
+// static
+void GDataDownloadObserver::GetGDataTempDownloadPath(
+    const FilePath& gdata_tmp_download_dir,
+    FilePath* gdata_tmp_download_path) {
+  bool created = file_util::CreateDirectory(gdata_tmp_download_dir);
+  DCHECK(created) << "Can not create temp download directory at "
+                  << gdata_tmp_download_dir.value();
+  created = file_util::CreateTemporaryFileInDir(gdata_tmp_download_dir,
+                                                gdata_tmp_download_path);
+  DCHECK(created) << "Temporary download file creation failed";
+}
+
 void GDataDownloadObserver::ManagerGoingDown(
     DownloadManager* download_manager) {
   download_manager->RemoveObserver(this);