[fsp] Group arguments for API methods and events in dictionaries.

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

 // Copyright 2014 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 <string>
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 120 matching lines @@
                  base::Unretained(&dispatcher)));
 
   EXPECT_TRUE(read_file.Execute(kRequestId));
 
   ASSERT_EQ(1u, dispatcher.events().size());
   extensions::Event* event = dispatcher.events()[0];
   EXPECT_EQ(
       extensions::api::file_system_provider::OnReadFileRequested::kEventName,
       event->event_name);
   base::ListValue* event_args = event->event_args.get();
-  ASSERT_EQ(5u, event_args->GetSize());
+  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(event_args->GetString(0, &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(event_args->GetInteger(1, &event_request_id));
+  EXPECT_TRUE(options->GetInteger("requestId", &event_request_id));
   EXPECT_EQ(kRequestId, event_request_id);
 
   int event_file_handle = -1;
-  EXPECT_TRUE(event_args->GetInteger(2, &event_file_handle));
+  EXPECT_TRUE(options->GetInteger("openRequestId", &event_file_handle));
   EXPECT_EQ(kFileHandle, event_file_handle);
 
   double event_offset = -1;
-  EXPECT_TRUE(event_args->GetDouble(3, &event_offset));
+  EXPECT_TRUE(options->GetDouble("offset", &event_offset));
   EXPECT_EQ(kOffset, static_cast<double>(event_offset));
 
   int event_length = -1;
-  EXPECT_TRUE(event_args->GetInteger(4, &event_length));
+  EXPECT_TRUE(options->GetInteger("length", &event_length));
   EXPECT_EQ(kLength, event_length);
 }
 
 TEST_F(FileSystemProviderOperationsReadFileTest, Execute_NoListener) {
   LoggingDispatchEventImpl dispatcher(false /* dispatch_reply */);
   CallbackLogger callback_logger;
 
   ReadFile read_file(
       NULL,
       file_system_info_,
@@ skipping 80 matching lines @@
   read_file.OnError(kRequestId, base::File::FILE_ERROR_TOO_MANY_OPENED);
 
   ASSERT_EQ(1u, callback_logger.events().size());
   CallbackLogger::Event* event = callback_logger.events()[0];
   EXPECT_EQ(base::File::FILE_ERROR_TOO_MANY_OPENED, event->result());
 }
 
 }  // namespace operations
 }  // namespace file_system_provider
 }  // namespace chromeos