[Mac] Always use the small, non-high res default avatars in the People menu bar

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

Index: chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm
diff --git a/chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm b/chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm
index 38382323c8e00ebf1a2a3be61fd47b096f8c8b26..e455b2f4a8e1d9066f380846e57e34bd8f63dc31 100644
--- a/chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm
+++ b/chrome/browser/ui/cocoa/profiles/profile_menu_controller.mm
@@ -133,7 +133,13 @@ class Observer : public chrome::BrowserListObserver,
     if (dock) {
       [item setIndentationLevel:1];
     } else {
-      gfx::Image itemIcon = itemData.icon;
+      gfx::Image itemIcon;
+      bool isRectangle;
+      // Always use the low-res, small default avatars in the menu.
+      AvatarMenu::GetImageForMenuButton(itemData.profile_path,
+                                        &itemIcon,
+                                        &isRectangle);
+
       // The image might be too large and need to be resized (i.e. if this is
       // a signed-in user using the GAIA profile photo).
       if (itemIcon.Width() > profiles::kAvatarIconWidth ||