drive: Add the local largest changestamp to chrome:drive-internals

chrome/browser/chromeos/drive/drive_file_system.cc

Index: chrome/browser/chromeos/drive/drive_file_system.cc
diff --git a/chrome/browser/chromeos/drive/drive_file_system.cc b/chrome/browser/chromeos/drive/drive_file_system.cc
index 11214ae5f6c7a570fa6ca42e584379d14fd2f123..d1ed7a87eaa851071012a743b890733cb328c1c6 100644
--- a/chrome/browser/chromeos/drive/drive_file_system.cc
+++ b/chrome/browser/chromeos/drive/drive_file_system.cc
@@ -2651,6 +2651,12 @@ void DriveFileSystem::UpdateCacheEntryOnUIThread(
                                      params.callback));
 }
 
+DriveFileSystemMetadata DriveFileSystem::GetMetadata() const {

[Zachary Kuznia, 2012/10/16 07:19:12]

Since you're only returning the largest changestamp, why not just add an
accessor for that field instead of the entire structure?

[satorux1, 2012/10/16 07:37:17]

I'm going to expose some more metadata shortly to chrome:drive-internals. :)

+  DriveFileSystemMetadata metadata;
+  metadata.largest_changestamp = resource_metadata_->largest_changestamp();
+  return metadata;
+}
+
 void DriveFileSystem::Observe(int type,
                               const content::NotificationSource& source,
                               const content::NotificationDetails& details) {