Move some file api files to fileapi folder

storage/browser/BUILD.gn

 # 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.
 
 # GYP version: storage/storage_browser.gyp:storage
 component("browser") {
   output_name = "storage_browser"
   sources = [
     "storage_browser_export.h",
     "blob/blob_data_builder.cc",
     "blob/blob_data_builder.h",
     "blob/blob_data_handle.cc",
     "blob/blob_data_handle.h",
     "blob/blob_data_item.cc",
     "blob/blob_data_item.h",
     "blob/blob_data_snapshot.cc",
     "blob/blob_data_snapshot.h",
     "blob/blob_storage_context.cc",
     "blob/blob_storage_context.h",
     "blob/blob_url_request_job.cc",
     "blob/blob_url_request_job.h",
     "blob/blob_url_request_job_factory.cc",
     "blob/blob_url_request_job_factory.h",
-    "blob/file_stream_reader.cc",
-    "blob/file_stream_reader.h",
     "blob/internal_blob_data.cc",
     "blob/internal_blob_data.h",
-    "blob/local_file_stream_reader.cc",
-    "blob/local_file_stream_reader.h",
     "blob/scoped_file.cc",
     "blob/scoped_file.h",
     "blob/shareable_blob_data_item.cc",
     "blob/shareable_blob_data_item.h",
     "blob/shareable_file_reference.cc",
     "blob/shareable_file_reference.h",
     "blob/view_blob_internals_job.cc",
     "blob/view_blob_internals_job.h",
     "database/database_quota_client.cc",
     "database/database_quota_client.h",
@@ skipping 10 matching lines @@
     "fileapi/async_file_util_adapter.h",
     "fileapi/copy_or_move_file_validator.h",
     "fileapi/copy_or_move_operation_delegate.cc",
     "fileapi/copy_or_move_operation_delegate.h",
     "fileapi/dragged_file_util.cc",
     "fileapi/dragged_file_util.h",
     "fileapi/external_mount_points.cc",
     "fileapi/external_mount_points.h",
     "fileapi/file_observers.h",
     "fileapi/file_permission_policy.h",
+    "fileapi/file_stream_reader.cc",
+    "fileapi/file_stream_reader.h",
     "fileapi/file_stream_writer.h",
     "fileapi/file_system_backend.h",
     "fileapi/file_system_context.cc",
     "fileapi/file_system_context.h",
     "fileapi/file_system_dir_url_request_job.cc",
     "fileapi/file_system_dir_url_request_job.h",
     "fileapi/file_system_file_stream_reader.cc",
     "fileapi/file_system_file_stream_reader.h",
     "fileapi/file_system_file_util.cc",
     "fileapi/file_system_file_util.h",
@@ skipping 16 matching lines @@
     "fileapi/file_system_url_request_job_factory.cc",
     "fileapi/file_system_url_request_job_factory.h",
     "fileapi/file_system_usage_cache.cc",
     "fileapi/file_system_usage_cache.h",
     "fileapi/file_writer_delegate.cc",
     "fileapi/file_writer_delegate.h",
     "fileapi/isolated_context.cc",
     "fileapi/isolated_context.h",
     "fileapi/isolated_file_system_backend.cc",
     "fileapi/isolated_file_system_backend.h",
+    "fileapi/local_file_stream_reader.cc",
+    "fileapi/local_file_stream_reader.h",
     "fileapi/local_file_stream_writer.cc",
     "fileapi/local_file_stream_writer.h",
     "fileapi/local_file_util.cc",
     "fileapi/local_file_util.h",
     "fileapi/mount_points.cc",
     "fileapi/mount_points.h",
     "fileapi/native_file_util.cc",
     "fileapi/native_file_util.h",
     "fileapi/obfuscated_file_util.cc",
     "fileapi/obfuscated_file_util.h",
@@ skipping 94 matching lines @@
   sources = [
     "fileapi/dump_file_system.cc",
   ]
 
   deps = [
     ":browser",
     "//base",
     "//storage/common",
   ]
 }