I forgot that GURL doesn't do fixup.

chrome/browser/alternate_nav_url_fetcher.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/alternate_nav_url_fetcher.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/tab_contents/navigation_controller.h"
@@ skipping 79 matching lines @@
 
     // The following TLD+1s are used as destinations by ISPs/DNS providers/etc.
     // who return provider-controlled pages to arbitrary user navigation
     // attempts.  Because this can result in infobars on large fractions of user
     // searches, we don't show automatic infobars for these.  Note that users
     // can still choose to explicitly navigate to or search for pages in these
     // domains, and can still get infobars for cases that wind up on other
     // domains (e.g. legit intranet sites), we're just trying to avoid
     // erroneously harassing the user with our own UI prompts.
     const char* kBlacklistedSites[] = {
-        "comcast.com",
-        "opendns.com",
-        "verizon.net",
+        // NOTE: Use complete URLs, because GURL() doesn't do fixup!
+        "http://comcast.com/",
+        "http://opendns.com/",
+        "http://verizon.net/",
     };
     for (size_t i = 0; i < arraysize(kBlacklistedSites); ++i) {
       if (net::RegistryControlledDomainService::SameDomainOrHost(
           url, GURL(kBlacklistedSites[i]))) {
         state_ = FAILED;
         break;
       }
     }
   } else {
     state_ = FAILED;
@@ skipping 41 matching lines @@
     if (state_ == FAILED)
       delete this;
     return;
   }
 
   infobar_contents_ = controller_->tab_contents();
   StoreActiveEntryUniqueID(infobar_contents_);
   // We will be deleted when the InfoBar is destroyed. (See InfoBarClosed).
   infobar_contents_->AddInfoBar(this);
 }