Supervised user interstitial: Handle missing custodian profile URL.

chrome/browser/supervised_user/supervised_user_interstitial.cc

Index: chrome/browser/supervised_user/supervised_user_interstitial.cc
diff --git a/chrome/browser/supervised_user/supervised_user_interstitial.cc b/chrome/browser/supervised_user/supervised_user_interstitial.cc
index 17baddf27f49f5c33791d9819eb1f5b871b4df8a..9bbe704cb0b8311496cbd0f4b761e333f86429a6 100644
--- a/chrome/browser/supervised_user/supervised_user_interstitial.cc
+++ b/chrome/browser/supervised_user/supervised_user_interstitial.cc
@@ -150,6 +150,9 @@ std::string SupervisedUserInterstitial::GetHTMLContents() {
 
   GURL profile_url = GURL(profile->GetPrefs()->GetString(

[Bernhard Bauer, 2014/08/21 14:48:46]

Could we rename this to base_url, now that it might not always actually contain
the profile URL?

[Marc Treib, 2014/08/21 15:59:08]

Done.

       prefs::kSupervisedUserCustodianProfileURL));
+  if (!profile_url.is_valid())
+    profile_url = GURL("https://dummy.url");
+  DCHECK(profile_url.is_valid());
   std::string profile_image_url = profile->GetPrefs()->GetString(
       prefs::kSupervisedUserCustodianProfileImageURL);
   strings.SetString("avatarURL1x", BuildAvatarImageUrl(profile_image_url,
@@ -161,6 +164,9 @@ std::string SupervisedUserInterstitial::GetHTMLContents() {
 
   GURL profile_url2 = GURL(profile->GetPrefs()->GetString(
       prefs::kSupervisedUserSecondCustodianProfileURL));
+  if (!profile_url2.is_valid())
+    profile_url2 = GURL("https://dummy.url");
+  DCHECK(profile_url2.is_valid());
   std::string profile_image_url2 = profile->GetPrefs()->GetString(
       prefs::kSupervisedUserSecondCustodianProfileImageURL);
   strings.SetString("secondAvatarURL1x", BuildAvatarImageUrl(profile_image_url2,