Populate storage_unittests target.

storage/browser/test/sandbox_file_system_test_helper.cc

Index: storage/browser/test/sandbox_file_system_test_helper.cc
diff --git a/content/public/test/sandbox_file_system_test_helper.cc b/storage/browser/test/sandbox_file_system_test_helper.cc
similarity index 96%
rename from content/public/test/sandbox_file_system_test_helper.cc
rename to storage/browser/test/sandbox_file_system_test_helper.cc
index 57071c27755b80cf4d2e6106c85de9857714e43f..f63ccb29e5d1db491147d9d250373c7b3113ac1b 100644
--- a/content/public/test/sandbox_file_system_test_helper.cc
+++ b/storage/browser/test/sandbox_file_system_test_helper.cc
@@ -2,14 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/public/test/sandbox_file_system_test_helper.h"
+#include "storage/browser/test/sandbox_file_system_test_helper.h"
 
 #include <memory>
 
 #include "base/files/file_util.h"
 #include "base/run_loop.h"
-#include "content/public/test/mock_special_storage_policy.h"
-#include "content/public/test/test_file_system_context.h"
 #include "storage/browser/fileapi/file_system_context.h"
 #include "storage/browser/fileapi/file_system_file_util.h"
 #include "storage/browser/fileapi/file_system_operation_context.h"
@@ -18,6 +16,8 @@
 #include "storage/browser/fileapi/file_system_usage_cache.h"
 #include "storage/browser/fileapi/sandbox_file_system_backend.h"
 #include "storage/browser/quota/quota_manager_proxy.h"
+#include "storage/browser/test/mock_special_storage_policy.h"
+#include "storage/browser/test/test_file_system_context.h"
 #include "storage/common/fileapi/file_system_util.h"
 #include "url/gurl.h"