[Profiles] Fix the usage of custom/default names and avatars

chrome/browser/ui/cocoa/profiles/avatar_button_controller_unittest.mm

Index: chrome/browser/ui/cocoa/profiles/avatar_button_controller_unittest.mm
diff --git a/chrome/browser/ui/cocoa/profiles/avatar_button_controller_unittest.mm b/chrome/browser/ui/cocoa/profiles/avatar_button_controller_unittest.mm
index 5ce2e9ece4ac160ff581104fa0d7c35dd3ac4129..a14fbefb160b147390263d2739e93a140f0a2e3d 100644
--- a/chrome/browser/ui/cocoa/profiles/avatar_button_controller_unittest.mm
+++ b/chrome/browser/ui/cocoa/profiles/avatar_button_controller_unittest.mm
@@ -17,8 +17,8 @@
 #import "chrome/browser/ui/cocoa/profiles/profile_chooser_controller.h"
 #include "chrome/common/chrome_switches.h"
 #include "components/signin/core/common/profile_management_switches.h"
-
-const char kDefaultProfileName[] = "default";
+#include "grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
 
 class AvatarButtonControllerTest : public CocoaProfileTest {
  public:
@@ -50,7 +50,8 @@ class AvatarButtonControllerTest : public CocoaProfileTest {
 
 TEST_F(AvatarButtonControllerTest, ButtonShown) {
   EXPECT_FALSE([view() isHidden]);
-  EXPECT_EQ(kDefaultProfileName, base::SysNSStringToUTF8([button() title]));
+  EXPECT_EQ(l10n_util::GetStringUTF16(IDS_SINGLE_PROFILE_DISPLAY_NAME),
+            base::SysNSStringToUTF16([button() title]));
 }
 
 TEST_F(AvatarButtonControllerTest, DoubleOpen) {