Move some quota tests next to the files they cover.

storage/browser/BUILD.gn

Index: storage/browser/BUILD.gn
diff --git a/storage/browser/BUILD.gn b/storage/browser/BUILD.gn
index e0a142542048cd1b7740bc0ec5e5d7cc219e6426..92aa32f39a1f3e6d3fe0e343b4550a657c1bf4ec 100644
--- a/storage/browser/BUILD.gn
+++ b/storage/browser/BUILD.gn
@@ -242,6 +242,8 @@ test("storage_unittests") {
     "fileapi/local_file_stream_reader_unittest.cc",
     "fileapi/local_file_stream_writer_unittest.cc",
     "fileapi/native_file_util_unittest.cc",
+    "fileapi/quota/quota_backend_impl_unittest.cc",
+    "fileapi/quota/quota_reservation_manager_unittest.cc",
     "fileapi/sandbox_isolated_origin_database_unittest.cc",
     "fileapi/sandbox_prioritized_origin_database_unittest.cc",
     "fileapi/timed_task_helper_unittest.cc",
@@ -254,5 +256,6 @@ test("storage_unittests") {
     "//net:test_support",
     "//sql:test_support",
     "//testing/gtest",
+    "//third_party/leveldatabase",
   ]
 }