Add option in about:flags to disable Quickoffice component extension

chrome/browser/chrome_browser_main.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/chrome_browser_main.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
 #endif
 
@@ skipping 531 matching lines @@
       rvh_callback_(base::Bind(&RenderViewHostCreated)),
       record_search_engine_(false),
       translate_manager_(NULL),
       profile_(NULL),
       run_message_loop_(true),
       notify_result_(ProcessSingleton::PROCESS_NONE),
       do_first_run_tasks_(false),
       local_state_(NULL),
       restart_last_session_(false) {
   // If we're running tests (ui_task is non-null).
-  if (parameters.ui_task) {
+  if (parameters.ui_task)
     browser_defaults::enable_help_app = false;
-    browser_defaults::enable_component_quick_office = false;
-  }
 
   // Chrome disallows cookies by default. All code paths that want to use
   // cookies need to go through one of Chrome's URLRequestContexts which have
   // a ChromeNetworkDelegate attached that selectively allows cookies again.
   if (!disable_enforcing_cookie_policies_for_tests_)
     net::URLRequest::SetDefaultCookiePolicyToBlock();
 
   content::RenderViewHost::AddCreatedCallback(rvh_callback_);
 }
 
@@ skipping 1183 matching lines @@
     if (base::win::GetVersion() <= base::win::VERSION_XP)
       uma_name += "_XP";
 
     uma_name += "_PreRead_";
     uma_name += pre_read_percentage;
     AddPreReadHistogramTime(uma_name.c_str(), time);
   }
 #endif
 #endif
 }