Move some File API backend unit tests next to the files that they cover.

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.
 import("//testing/test.gni")
 
 component("browser") {
   output_name = "storage_browser"
   sources = [
     "blob/blob_data_builder.cc",
     "blob/blob_data_builder.h",
@@ skipping 220 matching lines @@
     "blob/blob_memory_controller_unittest.cc",
     "blob/blob_reader_unittest.cc",
     "blob/blob_slice_unittest.cc",
     "blob/blob_storage_context_unittest.cc",
     "blob/blob_storage_registry_unittest.cc",
     "blob/blob_transport_request_builder_unittest.cc",
     "blob/blob_url_request_job_unittest.cc",
     "database/database_quota_client_unittest.cc",
     "database/database_util_unittest.cc",
     "database/databases_table_unittest.cc",
+    "fileapi/copy_or_move_file_validator_unittest.cc",
     "fileapi/external_mount_points_unittest.cc",
+    "fileapi/file_system_dir_url_request_job_unittest.cc",
+    "fileapi/file_system_file_stream_reader_unittest.cc",
+    "fileapi/file_system_quota_client_unittest.cc",
+    "fileapi/file_system_url_request_job_unittest.cc",
     "fileapi/file_system_url_unittest.cc",
     "fileapi/file_system_usage_cache_unittest.cc",
+    "fileapi/file_writer_delegate_unittest.cc",
     "fileapi/isolated_context_unittest.cc",
     "fileapi/local_file_stream_reader_unittest.cc",
     "fileapi/local_file_stream_writer_unittest.cc",
+    "fileapi/local_file_util_unittest.cc",
     "fileapi/native_file_util_unittest.cc",
+    "fileapi/plugin_private_file_system_backend_unittest.cc",
     "fileapi/quota/quota_backend_impl_unittest.cc",
     "fileapi/quota/quota_reservation_manager_unittest.cc",
+    "fileapi/sandbox_file_system_backend_delegate_unittest.cc",
+    "fileapi/sandbox_file_system_backend_unittest.cc",
     "fileapi/sandbox_isolated_origin_database_unittest.cc",
     "fileapi/sandbox_prioritized_origin_database_unittest.cc",
     "fileapi/timed_task_helper_unittest.cc",
+    "fileapi/transient_file_util_unittest.cc",
   ]
 
   deps = [
     ":browser",
     ":test_support",
     "//base/test:run_all_unittests",
     "//base/test:test_support",
     "//net:test_support",
     "//sql:test_support",
     "//testing/gtest",
@@ skipping 17 matching lines @@
     "test/test_file_system_options.h",
   ]
 
   deps = [
     ":browser",
     "//base/test:test_support",
     "//net:test_support",
     "//testing/gtest",
   ]
 }