[fsp] Use auto generated methods for generating dictionaries.

chrome/browser/chromeos/file_system_provider/operations/read_directory_unittest.cc

Index: chrome/browser/chromeos/file_system_provider/operations/read_directory_unittest.cc
diff --git a/chrome/browser/chromeos/file_system_provider/operations/read_directory_unittest.cc b/chrome/browser/chromeos/file_system_provider/operations/read_directory_unittest.cc
index f4152831bc3b7b77f89fabf308cfe0f044c16771..7fb0a1397cc238a9603bb029e2fbb366a01400da 100644
--- a/chrome/browser/chromeos/file_system_provider/operations/read_directory_unittest.cc
+++ b/chrome/browser/chromeos/file_system_provider/operations/read_directory_unittest.cc
@@ -92,6 +92,8 @@ class FileSystemProviderOperationsReadDirectoryTest : public testing::Test {
 };
 
 TEST_F(FileSystemProviderOperationsReadDirectoryTest, Execute) {
+  using extensions::api::file_system_provider::ReadDirectoryRequestedOptions;
+
   util::LoggingDispatchEventImpl dispatcher(true /* dispatch_reply */);
   CallbackLogger callback_logger;
 
@@ -114,20 +116,15 @@ TEST_F(FileSystemProviderOperationsReadDirectoryTest, Execute) {
   base::ListValue* event_args = event->event_args.get();
   ASSERT_EQ(1u, event_args->GetSize());
 
-  base::DictionaryValue* options = NULL;
-  ASSERT_TRUE(event_args->GetDictionary(0, &options));
-
-  std::string event_file_system_id;
-  EXPECT_TRUE(options->GetString("fileSystemId", &event_file_system_id));
-  EXPECT_EQ(kFileSystemId, event_file_system_id);
-
-  int event_request_id = -1;
-  EXPECT_TRUE(options->GetInteger("requestId", &event_request_id));
-  EXPECT_EQ(kRequestId, event_request_id);
+  const base::DictionaryValue* options_as_value = NULL;
+  ASSERT_TRUE(event_args->GetDictionary(0, &options_as_value));
 
-  std::string event_directory_path;
-  EXPECT_TRUE(options->GetString("directoryPath", &event_directory_path));
-  EXPECT_EQ(kDirectoryPath, event_directory_path);
+  ReadDirectoryRequestedOptions options;
+  ASSERT_TRUE(
+      ReadDirectoryRequestedOptions::Populate(*options_as_value, &options));
+  EXPECT_EQ(kFileSystemId, options.file_system_id);
+  EXPECT_EQ(kRequestId, options.request_id);
+  EXPECT_EQ(kDirectoryPath, options.directory_path);
 }
 
 TEST_F(FileSystemProviderOperationsReadDirectoryTest, Execute_NoListener) {