Implement CreateDirectoryOperation on Drive API v2.

chrome/test/data/chromeos/drive/directory_entry.json

Index: chrome/test/data/chromeos/drive/directory_entry.json
diff --git a/chrome/test/data/chromeos/drive/directory_entry.json b/chrome/test/data/chromeos/drive/directory_entry.json
new file mode 100644
index 0000000000000000000000000000000000000000..a6564ae38c05fda5636a16b24fbe05f43aaa4fc7
--- /dev/null
+++ b/chrome/test/data/chromeos/drive/directory_entry.json
@@ -0,0 +1,46 @@
+{
+  "kind": "drive#file",
+  "id": "directory_resource_id",
+  "etag": "\"directory_etag/files_etag\"",
+  "selfLink": "https://www.googleapis.com/drive/v2/files/directory_resource_id",
+  "alternateLink": "https://docs.google.com/folder/d/directory_resource_id/edit",
+  "iconLink": "https://ssl.gstatic.com/docs/doclist/images/icon_11_collection_list.png",
+  "title": "new directory",
+  "mimeType": "application/vnd.google-apps.folder",
+  "labels": {
+    "starred": false,
+    "hidden": false,
+    "trashed": false,
+    "restricted": false,
+    "viewed": true
+  },
+  "createdDate": "2013-01-28T05:54:08.286Z",
+  "modifiedDate": "2013-01-28T05:54:08.281Z",
+  "modifiedByMeDate": "2013-01-28T05:54:08.281Z",
+  "lastViewedByMeDate": "2013-01-28T05:54:08.281Z",
+  "parents": [
+    {
+      "kind": "drive#parentReference",
+      "id": "root_directory_id",
+      "selfLink": "https://www.googleapis.com/drive/v2/files/directory_resource_id/parents/root_directory_id",
+      "parentLink": "https://www.googleapis.com/drive/v2/files/root_directory_id",
+      "isRoot": true
+    }
+  ],
+  "userPermission": {
+    "kind": "drive#permission",
+    "etag": "\"directory_etag/permission_etag\"",
+    "id": "me",
+    "selfLink": "https://www.googleapis.com/drive/v2/files/directory_resource_id/permissions/me",
+    "role": "owner",
+    "type": "user"
+  },
+  "quotaBytesUsed": "0",
+  "ownerNames": [
+    "tester"
+  ],
+  "lastModifyingUserName": "tester",
+  "editable": true,
+  "writersCanShare": true,
+  "shared": false
+}