Fix feedback log collection.

chrome/browser/chromeos/system_logs/touch_log_source.cc

 // Copyright (c) 2013 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/system_logs/touch_log_source.h"
 
 #include "ash/shell.h"
 #include "ash/touch/touch_observer_hud.h"
 #include "chrome/browser/feedback/feedback_util.h"
 #include "content/public/browser/browser_thread.h"
 
+const char kHUDLogDataKey[] = "hud_log";
+
 namespace chromeos {
 
 TouchLogSource::TouchLogSource() {
 }
 
 TouchLogSource::~TouchLogSource() {
 }
 
 void TouchLogSource::Fetch(const SysLogsSourceCallback& callback) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   SystemLogsResponse response;
   if (ash::Shell::GetInstance()->touch_observer_hud()) {
     response[kHUDLogDataKey] =
         ash::Shell::GetInstance()->touch_observer_hud()->GetLogAsString();
   }
   callback.Run(&response);
 }
 
 }  // namespace chromeos