Coverity fixlet.

chrome/browser/extensions/extension_info_map.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/extension_info_map.h"
 
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_set.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 109 matching lines @@
 
 void ExtensionInfoMap::UnregisterAllExtensionsInProcess(int process_id) {
   process_map_.RemoveAllFromProcess(process_id);
 }
 
 bool ExtensionInfoMap::SecurityOriginHasAPIPermission(
     const GURL& origin, int process_id,
     extensions::APIPermission::ID permission) const {
   if (origin.SchemeIs(chrome::kExtensionScheme)) {
     const std::string& id = origin.host();
-    return extensions_.GetByID(id)->HasAPIPermission(permission) &&
+    const Extension* extension = extensions_.GetByID(id);
+    CHECK(extension != NULL);
+    return extension->HasAPIPermission(permission) &&
         process_map_.Contains(id, process_id);
   }
 
   ExtensionSet::const_iterator i = extensions_.begin();
   for (; i != extensions_.end(); ++i) {
     if ((*i)->web_extent().MatchesSecurityOrigin(origin) &&
         process_map_.Contains((*i)->id(), process_id) &&
         (*i)->HasAPIPermission(permission)) {
       return true;
     }
   }
   return false;
 }
 
 ExtensionsQuotaService* ExtensionInfoMap::GetQuotaService() {
   CheckOnValidThread();
   if (!quota_service_.get())
     quota_service_.reset(new ExtensionsQuotaService());
   return quota_service_.get();
 }
 
 ExtensionInfoMap::~ExtensionInfoMap() {
   if (quota_service_.get()) {
     BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE,
                               quota_service_.release());
   }
 }