Fix logic in a CHECK(), which was missing a ! .

chrome/browser/extensions/external_pref_extension_loader.cc

 // Copyright (c) 2011 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/external_pref_extension_loader.h"
 
 #include "app/app_paths.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
@@ skipping 67 matching lines @@
     }
   }
 
   if (!prefs.get())
     prefs.reset(new DictionaryValue());
 
   prefs_.reset(prefs.release());
 
   // If we have any records to process, then we must have
   // read the .json file.  If we read the .json file, then
-  // we were able to set |base_path_|.
-  CHECK(!prefs_->empty() || !base_path_.empty());
+  // we were able to set |base_path_|.  So, prefs_ is empty,
+  // or base_path_ is not empty.
+  CHECK(prefs_->empty() || !base_path_.empty());
 
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       NewRunnableMethod(
           this,
           &ExternalPrefExtensionLoader::LoadFinished));
 }
 
 ExternalTestingExtensionLoader::ExternalTestingExtensionLoader(
     const std::string& json_data,
     const FilePath& fake_base_path)
     : fake_base_path_(fake_base_path) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   JSONStringValueSerializer serializer(json_data);
   FilePath fake_json_path = fake_base_path.AppendASCII("fake.json");
   testing_prefs_.reset(ExtractPrefs(fake_json_path, &serializer));
 }
 
 void ExternalTestingExtensionLoader::StartLoading() {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   prefs_.reset(testing_prefs_->DeepCopy());
   LoadFinished();
 }
 
 const FilePath ExternalTestingExtensionLoader::GetBaseCrxFilePath() {
   return fake_base_path_;
 }