Media Galleries API: Fix MediaGalleriesPreferences finders race.

chrome/browser/media_galleries/media_galleries_test_util.cc

Index: chrome/browser/media_galleries/media_galleries_test_util.cc
diff --git a/chrome/browser/media_galleries/media_galleries_test_util.cc b/chrome/browser/media_galleries/media_galleries_test_util.cc
index d07e80c59971fb68af280b5bca47f635ccccd8ea..089a73b9627dff3239a7c006c88d1768dabe5490 100644
--- a/chrome/browser/media_galleries/media_galleries_test_util.cc
+++ b/chrome/browser/media_galleries/media_galleries_test_util.cc
@@ -67,15 +67,15 @@ scoped_refptr<extensions::Extension> AddMediaGalleriesApp(
   return extension;
 }
 
-EnsureMediaDirectoriesExists::EnsureMediaDirectoriesExists()
+TestMediaDirectoriesOverrides::TestMediaDirectoriesOverrides()
     : num_galleries_(0) {
   Init();
 }
 
-EnsureMediaDirectoriesExists::~EnsureMediaDirectoriesExists() {
+TestMediaDirectoriesOverrides::~TestMediaDirectoriesOverrides() {
 }
 
-void EnsureMediaDirectoriesExists::Init() {
+void TestMediaDirectoriesOverrides::Init() {
 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
   return;
 #else