gdata: Support mouting archive file in GData cache

chrome/browser/chromeos/extensions/file_browser_event_router.cc

Index: chrome/browser/chromeos/extensions/file_browser_event_router.cc
diff --git a/chrome/browser/chromeos/extensions/file_browser_event_router.cc b/chrome/browser/chromeos/extensions/file_browser_event_router.cc
index 87c9dfae8948d849bafcb61420cb0f547c7c6f7d..911aac65ee9570c37bd9f8cba3d7fa9e231d4a78 100644
--- a/chrome/browser/chromeos/extensions/file_browser_event_router.cc
+++ b/chrome/browser/chromeos/extensions/file_browser_event_router.cc
@@ -416,7 +416,7 @@ void FileBrowserEventRouter::OnDiskAdded(
   if (disk->mount_path().empty() && disk->has_media()) {
     // Initiate disk mount operation.
     DiskMountManager::GetInstance()->MountPath(
-        disk->device_path(), chromeos::MOUNT_TYPE_DEVICE);
+        disk->device_path(), std::string(), chromeos::MOUNT_TYPE_DEVICE);

[Ben Chan, 2012/04/17 20:57:53]

nit: perhaps add a comment here to indicate that it auto-detects the filesystem
format if the second argument is empty.

   } else {
     // Either the disk was mounted or it has no media. In both cases we don't
     // want the Scanning notification to persist.
@@ -483,7 +483,7 @@ void FileBrowserEventRouter::OnFormattingFinished(
     notifications_->HideNotificationDelayed(
         FileBrowserNotifications::FORMAT_SUCCESS, device_path, 4000);
 
-    DiskMountManager::GetInstance()->MountPath(device_path,
+    DiskMountManager::GetInstance()->MountPath(device_path, std::string(),

[Ben Chan, 2012/04/17 20:57:53]

ditto

                                                chromeos::MOUNT_TYPE_DEVICE);
   } else {
     notifications_->HideNotification(FileBrowserNotifications::FORMAT_START,