[Sync] Update Type Info section of sync-internals.

components/sync/engine/model_safe_worker.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 "components/sync/engine/model_safe_worker.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
@@ skipping 35 matching lines @@
     if (type != UNSPECIFIED && type != TOP_LEVEL_FOLDER)
       DVLOG(1) << "Entry does not belong to active ModelSafeGroup!";
     return GROUP_PASSIVE;
   }
   return it->second;
 }
 
 std::string ModelSafeGroupToString(ModelSafeGroup group) {
   switch (group) {
     case GROUP_UI:
-      return "GROUP_UI";
+      return "Group UI";
     case GROUP_DB:
-      return "GROUP_DB";
+      return "Group DB";
     case GROUP_FILE:
-      return "GROUP_FILE";
+      return "Group File";
     case GROUP_HISTORY:
-      return "GROUP_HISTORY";
+      return "Group History";
     case GROUP_PASSIVE:
-      return "GROUP_PASSIVE";
+      return "Group Passive";
     case GROUP_PASSWORD:
-      return "GROUP_PASSWORD";
+      return "Group Password";
     case GROUP_NON_BLOCKING:
-      return "GROUP_NON_BLOCKING";
-    default:
-      NOTREACHED();
-      return "INVALID";
+      return "Group Non Blocking";
   }
+  NOTREACHED();
+  return "Invalid";
 }
 
 ModelSafeWorker::ModelSafeWorker()
     : work_done_or_abandoned_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
                               base::WaitableEvent::InitialState::NOT_SIGNALED) {
 }
 ModelSafeWorker::~ModelSafeWorker() {}
 
 void ModelSafeWorker::RequestStop() {
   base::AutoLock auto_lock(lock_);
@@ skipping 65 matching lines @@
   *did_run = true;
 
   {
     base::AutoLock auto_lock(lock_);
     DCHECK(is_work_running_);
     is_work_running_ = false;
   }
 }
 
 }  // namespace syncer