FileBrowserHandlerManifestTest.FileManagerURLOverride test fails on Chromeium OS valgrind bot

chrome/browser/chromeos/extensions/file_browser_manifest_unittest.cc

Index: chrome/browser/chromeos/extensions/file_browser_manifest_unittest.cc
diff --git a/chrome/browser/chromeos/extensions/file_browser_manifest_unittest.cc b/chrome/browser/chromeos/extensions/file_browser_manifest_unittest.cc
index 58d8314267d7df251a9bef388ef99048eea4c4df..c846dcaa4d84bedc13a8a4b5b9dac5bbf4de2c15 100644
--- a/chrome/browser/chromeos/extensions/file_browser_manifest_unittest.cc
+++ b/chrome/browser/chromeos/extensions/file_browser_manifest_unittest.cc
@@ -8,6 +8,7 @@
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest_handler.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
+#include "chrome/common/extensions/manifest_url_handler.h"
 #include "chrome/common/extensions/value_builder.h"
 #include "extensions/common/error_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -27,6 +28,9 @@ class FileBrowserHandlerManifestTest : public ExtensionManifestTest {
     extensions::ManifestHandler::Register(
         extension_manifest_keys::kFileBrowserHandlers,
         new FileBrowserHandlerParser);
+    extensions::ManifestHandler::Register(
+        keys::kChromeURLOverrides,
+        new extensions::URLOverridesHandler);
   }
 };