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

chrome/browser/extensions/app_data_migrator_unittest.cc

Index: chrome/browser/extensions/app_data_migrator_unittest.cc
diff --git a/chrome/browser/extensions/app_data_migrator_unittest.cc b/chrome/browser/extensions/app_data_migrator_unittest.cc
index ac2610dd97041b62aec404dc03290cb7e33ea82d..0bea1900d500ee8a9720da6de631e47ac35cdfa0 100644
--- a/chrome/browser/extensions/app_data_migrator_unittest.cc
+++ b/chrome/browser/extensions/app_data_migrator_unittest.cc
@@ -17,7 +17,6 @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/indexed_db_context.h"
 #include "content/public/browser/storage_partition.h"
-#include "content/public/test/mock_blob_url_request_context.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/extension.h"
@@ -26,6 +25,7 @@
 #include "storage/browser/fileapi/file_system_context.h"
 #include "storage/browser/fileapi/file_system_operation_runner.h"
 #include "storage/browser/fileapi/file_system_url.h"
+#include "storage/browser/test/mock_blob_url_request_context.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {