Cleanup: Add a NOTREACHED() when selecting a profile photo.

chrome/browser/ui/webui/options/manage_profile_handler.cc

Index: chrome/browser/ui/webui/options/manage_profile_handler.cc
diff --git a/chrome/browser/ui/webui/options/manage_profile_handler.cc b/chrome/browser/ui/webui/options/manage_profile_handler.cc
index 4f00931e0496c2672b168de479b847a96c352dc1..55656dd271b2d56e6963e4c085acc40643b1eb76 100644
--- a/chrome/browser/ui/webui/options/manage_profile_handler.cc
+++ b/chrome/browser/ui/webui/options/manage_profile_handler.cc
@@ -359,6 +359,9 @@ void ManageProfileHandler::SetProfileIconAndName(const base::ListValue* args) {
     pref_service->SetInteger(prefs::kProfileAvatarIndex, new_icon_index);
     pref_service->SetBoolean(prefs::kProfileUsingDefaultAvatar, false);
     pref_service->SetBoolean(prefs::kProfileUsingGAIAAvatar, false);
+  } else {
+    // Only default avatars and Gaia account photos are supported.
+    CHECK(false);
   }
   ProfileMetrics::LogProfileUpdate(profile_file_path);