Set root resource ID upon full feed update.

chrome/browser/chromeos/drive/drive_file_system_unittest.cc

Index: chrome/browser/chromeos/drive/drive_file_system_unittest.cc
diff --git a/chrome/browser/chromeos/drive/drive_file_system_unittest.cc b/chrome/browser/chromeos/drive/drive_file_system_unittest.cc
index b2a59b55bc8ac8b423d91e3612ac0d2f8473c1d6..ef579b206c0ac1f8d1fa559a6c444bfadd0fa3b3 100644
--- a/chrome/browser/chromeos/drive/drive_file_system_unittest.cc
+++ b/chrome/browser/chromeos/drive/drive_file_system_unittest.cc
@@ -607,7 +607,7 @@ class DriveFileSystemTest : public testing::Test {
     DriveEntryProto* dir_base = root_dir->mutable_drive_entry();
     PlatformFileInfoProto* platform_info = dir_base->mutable_file_info();
     dir_base->set_title("drive");
-    dir_base->set_resource_id(kDriveRootDirectoryResourceId);
+    dir_base->set_resource_id(kWAPIRootDirectoryResourceId);
     dir_base->set_upload_url("http://resumable-create-media/1");
     platform_info->set_is_directory(true);
 
@@ -855,7 +855,7 @@ TEST_F(DriveFileSystemTest, SearchRootDirectory) {
   scoped_ptr<DriveEntryProto> entry = GetEntryInfoByPathSync(
       FilePath(FILE_PATH_LITERAL(kFilePath)));
   ASSERT_TRUE(entry.get());
-  EXPECT_EQ(kDriveRootDirectoryResourceId, entry->resource_id());
+  EXPECT_EQ(kWAPIRootDirectoryResourceId, entry->resource_id());
 }
 
 TEST_F(DriveFileSystemTest, SearchExistingFile) {
@@ -2516,7 +2516,7 @@ TEST_F(DriveFileSystemTest, RequestDirectoryRefresh) {
 
   // We'll fetch documents in the root directory with its resource ID.
   EXPECT_CALL(*mock_drive_service_,
-              GetDocuments(Eq(GURL()), _, _, kDriveRootDirectoryResourceId, _))
+              GetDocuments(Eq(GURL()), _, _, kWAPIRootDirectoryResourceId, _))
       .Times(1);
   // We'll notify the directory change to the observer.
   EXPECT_CALL(*mock_directory_observer_,