Create fileapi/ subdirectory under c/b/cros/drive.

chrome/chrome_browser_chromeos.gypi

Index: chrome/chrome_browser_chromeos.gypi
diff --git a/chrome/chrome_browser_chromeos.gypi b/chrome/chrome_browser_chromeos.gypi
index a5bf018636e3a4a6274d4db869d2cfcc3b7d0164..0f755bfb0b1ff9a3310e33441cbdac01ec8a726e 100644
--- a/chrome/chrome_browser_chromeos.gypi
+++ b/chrome/chrome_browser_chromeos.gypi
@@ -206,8 +206,6 @@
         'browser/chromeos/device_hierarchy_observer.h',
         'browser/chromeos/device_uma.cc',
         'browser/chromeos/device_uma.h',
-        'browser/chromeos/drive/async_file_util.cc',
-        'browser/chromeos/drive/async_file_util.h',
         'browser/chromeos/drive/change_list_loader.cc',
         'browser/chromeos/drive/change_list_loader.h',
         'browser/chromeos/drive/change_list_loader_observer.h',
@@ -256,8 +254,6 @@
         'browser/chromeos/drive/file_system/touch_operation.h',
         'browser/chromeos/drive/file_system/truncate_operation.cc',
         'browser/chromeos/drive/file_system/truncate_operation.h',
-        'browser/chromeos/drive/file_system_backend_delegate.cc',
-        'browser/chromeos/drive/file_system_backend_delegate.h',
         'browser/chromeos/drive/file_system_interface.h',
         'browser/chromeos/drive/file_system_metadata.cc',
         'browser/chromeos/drive/file_system_metadata.h',
@@ -268,8 +264,16 @@
         'browser/chromeos/drive/file_task_executor.h',
         'browser/chromeos/drive/file_write_watcher.cc',
         'browser/chromeos/drive/file_write_watcher.h',
-        'browser/chromeos/drive/fileapi_worker.cc',
-        'browser/chromeos/drive/fileapi_worker.h',
+        'browser/chromeos/drive/fileapi/async_file_util.cc',
+        'browser/chromeos/drive/fileapi/async_file_util.h',
+        'browser/chromeos/drive/fileapi/file_system_backend_delegate.cc',
+        'browser/chromeos/drive/fileapi/file_system_backend_delegate.h',
+        'browser/chromeos/drive/fileapi/fileapi_worker.cc',
+        'browser/chromeos/drive/fileapi/fileapi_worker.h',
+        'browser/chromeos/drive/fileapi/webkit_file_stream_reader_impl.cc',
+        'browser/chromeos/drive/fileapi/webkit_file_stream_reader_impl.h',
+        'browser/chromeos/drive/fileapi/webkit_file_stream_writer_impl.cc',
+        'browser/chromeos/drive/fileapi/webkit_file_stream_writer_impl.h',
         'browser/chromeos/drive/job_list.cc',
         'browser/chromeos/drive/job_list.h',
         'browser/chromeos/drive/job_queue.cc',
@@ -298,10 +302,6 @@
         'browser/chromeos/drive/sync/remove_performer.h',
         'browser/chromeos/drive/sync_client.cc',
         'browser/chromeos/drive/sync_client.h',
-        'browser/chromeos/drive/webkit_file_stream_reader_impl.cc',
-        'browser/chromeos/drive/webkit_file_stream_reader_impl.h',
-        'browser/chromeos/drive/webkit_file_stream_writer_impl.cc',
-        'browser/chromeos/drive/webkit_file_stream_writer_impl.h',
         'browser/chromeos/drive/write_on_cache_file.cc',
         'browser/chromeos/drive/write_on_cache_file.h',
         'browser/chromeos/enrollment_dialog_view.cc',