Move a browser-side File API unittest next to the file it covers.

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 228 matching lines @@
     "database/database_util_unittest.cc",
     "database/databases_table_unittest.cc",
     "fileapi/copy_or_move_file_validator_unittest.cc",
     "fileapi/copy_or_move_operation_delegate_unittest.cc",
     "fileapi/dragged_file_util_unittest.cc",
     "fileapi/external_mount_points_unittest.cc",
     "fileapi/file_system_context_unittest.cc",
     "fileapi/file_system_dir_url_request_job_unittest.cc",
     "fileapi/file_system_file_stream_reader_unittest.cc",
     "fileapi/file_system_operation_impl_unittest.cc",
+    "fileapi/file_system_operation_impl_write_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",
@@ skipping 31 matching lines @@
 }
 
 static_library("test_support") {
   testonly = true
 
   sources = [
     "test/async_file_test_helper.cc",
     "test/async_file_test_helper.h",
     "test/fileapi_test_file_set.cc",
     "test/fileapi_test_file_set.h",
+    "test/mock_blob_url_request_context.cc",
+    "test/mock_blob_url_request_context.h",
     "test/mock_file_change_observer.cc",
     "test/mock_file_change_observer.h",
     "test/mock_file_update_observer.cc",
     "test/mock_file_update_observer.h",
     "test/mock_quota_manager.cc",
     "test/mock_quota_manager.h",
     "test/mock_quota_manager_proxy.cc",
     "test/mock_quota_manager_proxy.h",
     "test/mock_special_storage_policy.cc",
     "test/mock_special_storage_policy.h",
@@ skipping 12 matching lines @@
   ]
 
   deps = [
     ":browser",
     "//base/test:test_support",
     "//net:test_support",
     "//testing/gtest",
     "//third_party/leveldatabase",
   ]
 }