DeviceSettingsService: Fix spelling and grammar inside comment.

chrome/browser/chromeos/settings/device_settings_service.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/chromeos/settings/device_settings_service.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/stl_util.h"
@@ skipping 333 matching lines @@
     owner_key_ = new_key;
     new_owner_key = true;
   }
 
   if (status == STORE_SUCCESS) {
     policy_data_ = operation->policy_data().Pass();
     device_settings_ = operation->device_settings().Pass();
     load_retries_left_ = kMaxLoadRetries;
   } else if (status != STORE_KEY_UNAVAILABLE) {
     LOG(ERROR) << "Session manager operation failed: " << status;
-    // Validation errors can be temprary if the rtc has went on holiday for a
+    // Validation errors can be temporary if the rtc has gone on holiday for a
     // short while. So we will retry such loads for up to 10 minutes.
     if (status == STORE_TEMP_VALIDATION_ERROR) {
       if (load_retries_left_ > 0) {
         load_retries_left_--;
         LOG(ERROR) << "A re-load has been scheduled due to a validation error.";
         content::BrowserThread::PostDelayedTask(
             content::BrowserThread::UI,
             FROM_HERE,
             base::Bind(&DeviceSettingsService::Load, base::Unretained(this)),
             base::TimeDelta::FromMilliseconds(kLoadRetryDelayMs));
@@ skipping 123 matching lines @@
   DeviceSettingsService::Initialize();
 }
 
 ScopedTestDeviceSettingsService::~ScopedTestDeviceSettingsService() {
   // Clean pending operations.
   DeviceSettingsService::Get()->UnsetSessionManager();
   DeviceSettingsService::Shutdown();
 }
 
 }  // namespace chromeos