Quick fix to skip invalid URLs in ExtensionDownloader.

chrome/browser/extensions/updater/extension_downloader.cc

 // Copyright (c) 2012 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/extensions/updater/extension_downloader.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 524 matching lines @@
     VLOG(2) << "will try to update " << id;
     result->push_back(i);
   }
 }
 
   // Begins (or queues up) download of an updated extension.
 void ExtensionDownloader::FetchUpdatedExtension(const std::string& id,
                                                 const GURL& url,
                                                 const std::string& hash,
                                                 const std::string& version) {
+  if (!url.is_valid()) {
+    // TODO(asargent): This can sometimes be invalid. See crbug.com/130881.
+    LOG(ERROR) << "Invalid URL: " << url.spec();
+    return;
+  }
+
   for (std::deque<ExtensionFetch>::const_iterator iter =
            extensions_pending_.begin();
        iter != extensions_pending_.end(); ++iter) {
     if (iter->id == id || iter->url == url) {
       return;  // already scheduled
     }
   }
 
   if (extension_fetcher_.get() != NULL) {
     if (extension_fetcher_->GetURL() != url) {
@@ skipping 87 matching lines @@
 }
 
 void ExtensionDownloader::NotifyUpdateFound(const std::string& id) {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_EXTENSION_UPDATE_FOUND,
       content::NotificationService::AllBrowserContextsAndSources(),
       content::Details<const std::string>(&id));
 }
 
 }  // namespace extensions