drive: Deal with the root directory in the same way as others in MoveOperation.

chrome/browser/google_apis/gdata_wapi_url_generator.cc

 // Copyright (c) 2012 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/google_apis/gdata_wapi_url_generator.h"
 
 #include "base/logging.h"
 #include "base/stringprintf.h"
 #include "chrome/common/net/url_util.h"
 #include "googleurl/src/gurl.h"
@@ skipping 14 matching lines @@
 
 // URL requesting single resource entry whose resource id is specified by "%s".
 const char kGetResourceEntryURLFormat[] = "/feeds/default/private/full/%s";
 
 // Root resource list url.
 const char kResourceListRootURL[] = "/feeds/default/private/full";
 
 // Metadata feed with things like user quota.
 const char kAccountMetadataURL[] = "/feeds/metadata/default";
 
+// URL for the content_url of the root directory.
+const char kRootContentURL[] =
+    "/feeds/default/private/full/folder%3Aroot/contents";
+
 #ifndef NDEBUG
 // Use smaller 'page' size while debugging to ensure we hit feed reload
 // almost always. Be careful not to use something too small on account that
 // have many items because server side 503 error might kick in.
 const int kMaxDocumentsPerFeed = 500;
 const int kMaxDocumentsPerSearchFeed = 50;
 #else
 const int kMaxDocumentsPerFeed = 500;
 const int kMaxDocumentsPerSearchFeed = 50;
 #endif
@@ skipping 109 matching lines @@
 }
 
 GURL GDataWapiUrlGenerator::GenerateResourceListRootUrl() const {
   return AddStandardUrlParams(base_url_.Resolve(kResourceListRootURL));
 }
 
 GURL GDataWapiUrlGenerator::GenerateAccountMetadataUrl() const {
   return AddMetadataUrlParams(base_url_.Resolve(kAccountMetadataURL));
 }
 
+GURL GDataWapiUrlGenerator::GenerateRootContentUrl() const {
+  return base_url_.Resolve(kRootContentURL);
+}
+
 }  // namespace google_apis