base: Add three helper functions to Values API.

chrome/browser/ui/webui/print_preview_handler.cc

 // Copyright (c) 2011 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/print_preview_handler.h"
 
 #include <string>
 
 #include "base/base64.h"
 #if !defined(OS_CHROMEOS)
@@ skipping 675 matching lines @@
     const StringValue& default_printer,
     const StringValue& cloud_print_data) {
   web_ui_->CallJavascriptFunction("setDefaultPrinter",
                                   default_printer,
                                   cloud_print_data);
 }
 
 void PrintPreviewHandler::SetupPrinterList(const ListValue& printers) {
   SendCloudPrintEnabled();
   web_ui_->CallJavascriptFunction("setPrinters", printers,
-                                  *(Value::CreateBooleanValue(true)));
+                                  *(base::TrueValue()));
 }
 
 void PrintPreviewHandler::SendCloudPrintEnabled() {
 #if defined(OS_CHROMEOS)
   bool enable_cloud_print_integration = true;
 #else
   bool enable_cloud_print_integration =
       CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableCloudPrint);
 #endif
   GURL gcp_url(CloudPrintURL(BrowserList::GetLastActive()->profile()).
@@ skipping 180 matching lines @@
     return;
 
   // We no longer require the initiator tab details. Remove those details
   // associated with the preview tab to allow the initiator tab to create
   // another preview tab.
   printing::PrintPreviewTabController* tab_controller =
      printing::PrintPreviewTabController::GetInstance();
   if (tab_controller)
     tab_controller->EraseInitiatorTabInfo(preview_tab());
 }