Makes MaterialDesignController initialization explicit

chrome/app/resources/resources_unittest.cc

Index: chrome/app/resources/resources_unittest.cc
diff --git a/chrome/app/resources/resources_unittest.cc b/chrome/app/resources/resources_unittest.cc
index f504010a4cc4cbb6385e40834a7806458e7e9309..eff82b22d5cc1a535c946acfa813d9d07909c23b 100644
--- a/chrome/app/resources/resources_unittest.cc
+++ b/chrome/app/resources/resources_unittest.cc
@@ -13,6 +13,7 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include "ui/base/l10n/l10n_util.h"
+#include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_paths.h"
 
@@ -20,6 +21,7 @@ class ResourcesTest : public ::testing::Test {
  protected:
   ResourcesTest() {
     ui::RegisterPathProvider();
+    ui::MaterialDesignController::Initialize();
     ResourceBundle::InitSharedInstanceWithLocale(
         "en-US", nullptr, ResourceBundle::LOAD_COMMON_RESOURCES);
   }