Fix integration tests in src/chrome and src/extensions so that we can turn on IO thread checks wi...

chrome/browser/ui/webui/net_internals/net_internals_ui_browsertest.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/ui/webui/net_internals/net_internals_ui_browsertest.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/macros.h"
 #include "base/strings/string_split.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/net_internals/net_internals_ui.h"
 #include "chrome/common/channel_info.h"
@@ skipping 254 matching lines @@
     const base::ListValue* list_value) {
   ASSERT_TRUE(incognito_browser_);
   incognito_browser_->tab_strip_model()->CloseAllTabs();
   // Closing all a Browser's tabs will ultimately result in its destruction,
   // thought it may not have been destroyed yet.
   incognito_browser_ = NULL;
 }
 
 void NetInternalsTest::MessageHandler::GetNetLogFileContents(
     const base::ListValue* list_value) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   base::ScopedTempDir temp_directory;
   ASSERT_TRUE(temp_directory.CreateUniqueTempDir());
   base::FilePath temp_file;
   ASSERT_TRUE(
       base::CreateTemporaryFileInDir(temp_directory.GetPath(), &temp_file));
   base::ScopedFILE temp_file_handle(base::OpenFile(temp_file, "w"));
   ASSERT_TRUE(temp_file_handle);
 
   std::unique_ptr<base::Value> constants(net_log::ChromeNetLog::GetConstants(
       base::CommandLine::ForCurrentProcess()->GetCommandLineString(),
@@ skipping 74 matching lines @@
   if (test_server_started_)
     return true;
   test_server_started_ = embedded_test_server()->Start();
 
   // Sample domain for SDCH-view test. Dictionaries for localhost/127.0.0.1
   // are forbidden.
   host_resolver()->AddRule("testdomain.com", "127.0.0.1");
   host_resolver()->AddRule("sub.testdomain.com", "127.0.0.1");
   return test_server_started_;
 }