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

chrome/browser/sync/profile_sync_service.cc

Index: chrome/browser/sync/profile_sync_service.cc
===================================================================
--- chrome/browser/sync/profile_sync_service.cc	(revision 70187)
+++ chrome/browser/sync/profile_sync_service.cc	(working copy)
@@ -554,7 +554,6 @@
       return prefs::kSyncAutofill;
     case syncable::AUTOFILL_PROFILE:
       return prefs::kSyncAutofillProfile;
-      break;
     case syncable::THEMES:
       return prefs::kSyncThemes;
     case syncable::TYPED_URLS:
@@ -566,9 +565,10 @@
     case syncable::SESSIONS:
       return prefs::kSyncSessions;
     default:
-      NOTREACHED();
-      return NULL;
+      break;
   }
+  NOTREACHED();
+  return NULL;
 }
 
 // An invariant has been violated.  Transition to an error state where we try