Move some fileapi tests next to the files they cover.

content/test/BUILD.gn

Index: content/test/BUILD.gn
diff --git a/content/test/BUILD.gn b/content/test/BUILD.gn
index 8dbfbcdf45996c585e3d80b16123bb38506fdcd0..35bd2732166139c22555db24c6eccc5ef13d572f 100644
--- a/content/test/BUILD.gn
+++ b/content/test/BUILD.gn
@@ -1075,7 +1075,6 @@ test("content_unittests") {
     "../browser/fileapi/copy_or_move_file_validator_unittest.cc",
     "../browser/fileapi/copy_or_move_operation_delegate_unittest.cc",
     "../browser/fileapi/dragged_file_util_unittest.cc",
-    "../browser/fileapi/external_mount_points_unittest.cc",
     "../browser/fileapi/file_system_context_unittest.cc",
     "../browser/fileapi/file_system_dir_url_request_job_unittest.cc",
     "../browser/fileapi/file_system_file_stream_reader_unittest.cc",
@@ -1084,13 +1083,8 @@ test("content_unittests") {
     "../browser/fileapi/file_system_operation_runner_unittest.cc",
     "../browser/fileapi/file_system_quota_client_unittest.cc",
     "../browser/fileapi/file_system_url_request_job_unittest.cc",
-    "../browser/fileapi/file_system_url_unittest.cc",
-    "../browser/fileapi/file_system_usage_cache_unittest.cc",
     "../browser/fileapi/file_writer_delegate_unittest.cc",
     "../browser/fileapi/fileapi_message_filter_unittest.cc",
-    "../browser/fileapi/isolated_context_unittest.cc",
-    "../browser/fileapi/local_file_stream_reader_unittest.cc",
-    "../browser/fileapi/local_file_stream_writer_unittest.cc",
     "../browser/fileapi/local_file_util_unittest.cc",
     "../browser/fileapi/mock_file_change_observer.cc",
     "../browser/fileapi/mock_file_change_observer.h",
@@ -1098,7 +1092,6 @@ test("content_unittests") {
     "../browser/fileapi/mock_file_update_observer.h",
     "../browser/fileapi/mock_url_request_delegate.cc",
     "../browser/fileapi/mock_url_request_delegate.h",
-    "../browser/fileapi/native_file_util_unittest.cc",
     "../browser/fileapi/obfuscated_file_util_unittest.cc",
     "../browser/fileapi/plugin_private_file_system_backend_unittest.cc",
     "../browser/fileapi/recursive_operation_delegate_unittest.cc",
@@ -1107,10 +1100,7 @@ test("content_unittests") {
     "../browser/fileapi/sandbox_directory_database_unittest.cc",
     "../browser/fileapi/sandbox_file_system_backend_delegate_unittest.cc",
     "../browser/fileapi/sandbox_file_system_backend_unittest.cc",
-    "../browser/fileapi/sandbox_isolated_origin_database_unittest.cc",
     "../browser/fileapi/sandbox_origin_database_unittest.cc",
-    "../browser/fileapi/sandbox_prioritized_origin_database_unittest.cc",
-    "../browser/fileapi/timed_task_helper_unittest.cc",
     "../browser/fileapi/transient_file_util_unittest.cc",
     "../browser/fileapi/upload_file_system_file_element_reader_unittest.cc",
     "../browser/frame_host/ancestor_throttle_unittest.cc",