gdata: Add ability to fetch documents in a particular directory

chrome/browser/chromeos/gdata/gdata_documents_service_browsertest.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 "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
 #include "chrome/browser/chromeos/gdata/gdata_documents_service.h"
@@ skipping 94 matching lines @@
   // Do not verify the not found message.
 }
 
 IN_PROC_BROWSER_TEST_F(GDataTest, GetDocuments) {
   gdata::GDataErrorCode result = gdata::GDATA_OTHER_ERROR;
   base::Value* result_data = NULL;
   service_->GetDocuments(
       gdata_test_server_.GetURL("files/chromeos/gdata/root_feed.json"),
       0,  // start_changestamp
       std::string(),  // search string
+      std::string(),  // directory resource ID
       base::Bind(&TestGetDocumentsCallback, &result, &result_data));
   ui_test_utils::RunMessageLoop();
 
   EXPECT_EQ(gdata::HTTP_SUCCESS, result);
   ASSERT_TRUE(result_data);
   FilePath expected_filepath = gdata_test_server_.document_root().Append(
       FilePath(FILE_PATH_LITERAL("chromeos/gdata/root_feed.json")));
   std::string expected_contents;
   file_util::ReadFileToString(expected_filepath, &expected_contents);
   scoped_ptr<base::Value> expected_data(
       base::JSONReader::Read(expected_contents));
   EXPECT_TRUE(base::Value::Equals(expected_data.get(), result_data));
   delete result_data;
 }
 
 IN_PROC_BROWSER_TEST_F(GDataTest, GetDocumentsFailure) {
   // testfile.txt exists but the response is not JSON, so it should
   // emit a parse error instead.
   gdata::GDataErrorCode result = gdata::GDATA_OTHER_ERROR;
   base::Value* result_data = NULL;
   service_->GetDocuments(
       gdata_test_server_.GetURL("files/chromeos/gdata/testfile.txt"),
       0,  // start_changestamp
       std::string(),  // search string
+      std::string(),  // directory resource ID
       base::Bind(&TestGetDocumentsCallback, &result, &result_data));
   ui_test_utils::RunMessageLoop();
 
   EXPECT_EQ(gdata::GDATA_PARSE_ERROR, result);
   EXPECT_FALSE(result_data);
 }