Chromium build failed with heap leak checker, or configured with 'gyp_chromiu...

chrome/browser/sync/syncable/model_type.cc

 // Copyright (c) 2010 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/sync/syncable/model_type.h"
 
 #include <sstream>
 
 #include "base/metrics/histogram.h"
 #include "chrome/browser/sync/engine/syncproto.h"
@@ skipping 137 matching lines @@
     case EXTENSIONS:
       return "Extensions";
     case NIGORI:
       return "Encryption keys";
     case SESSIONS:
       return "Sessions";
     case APPS:
       return "Apps";
     case AUTOFILL_PROFILE:
       return "Autofill Profile";
+    default:
       break;
-    default:
-      NOTREACHED() << "No known extension for model type.";
-      return "INVALID";
   }
+  NOTREACHED() << "No known extension for model type.";
+  return "INVALID";
 }
 
 ModelType ModelTypeFromString(const std::string& model_type_string) {
   if (model_type_string == "Bookmarks")
     return BOOKMARKS;
   else if (model_type_string == "Preferences")
     return PREFERENCES;
   else if (model_type_string == "Passwords")
     return PASSWORDS;
   else if (model_type_string == "Autofill")
@@ skipping 195 matching lines @@
     // server-issued notifications.  Remove this when it's not needed
     // anymore.
     *model_type = UNSPECIFIED;
     return true;
   }
   *model_type = UNSPECIFIED;
   return false;
 }
 
 }  // namespace syncable