Cleanup: Do not use wstrings in the cloud print dialog.

chrome/browser/printing/print_dialog_cloud_internal.h

 // 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.
 
 #ifndef CHROME_BROWSER_PRINTING_PRINT_DIALOG_CLOUD_INTERNAL_H_
 #define CHROME_BROWSER_PRINTING_PRINT_DIALOG_CLOUD_INTERNAL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_ui_message_handler.h"
 #include "ui/web_dialogs/web_dialog_delegate.h"
 #include "ui/web_dialogs/web_dialog_ui.h"
 
+class CloudPrintWebDialogDelegateTest;
 class GURL;
-class CloudPrintWebDialogDelegateTest;
 
 namespace base {
 class ListValue;
-class StringValue;
 class Value;
 }
 
 namespace internal_cloud_print_helpers {
 
 // Small class to virtualize a few functions to aid with unit testing.
 class CloudPrintDataSenderHelper {
  public:
   explicit CloudPrintDataSenderHelper(content::WebUI* web_ui)
       : web_ui_(web_ui) {}
   virtual ~CloudPrintDataSenderHelper() {}
 
-  // Virtualize the overrides of these three functions from WebUI to
-  // facilitate unit testing.
-  virtual void CallJavascriptFunction(const std::wstring& function_name);
-  virtual void CallJavascriptFunction(const std::wstring& function_name,
-                                      const base::Value& arg);
-  virtual void CallJavascriptFunction(const std::wstring& function_name,
+  // Virtualize the overrides of this function from WebUI to facilitate unit
+  // testing.
+  virtual void CallJavascriptFunction(const std::string& function_name,
                                       const base::Value& arg1,
                                       const base::Value& arg2);
-  virtual void CallJavascriptFunction(const std::wstring& function_name,
-                                      const base::Value& arg1,
-                                      const base::Value& arg2,
-                                      const base::Value& arg3);
 
  private:
   content::WebUI* web_ui_;
 
   DISALLOW_COPY_AND_ASSIGN(CloudPrintDataSenderHelper);
 };
 
 // Small helper class to get the print data loaded in from the PDF
 // file (on the FILE thread) and send it to the print dialog contents
 // (on the IO thread), allowing for cancellation.
@@ skipping 155 matching lines @@
                              const string16& print_ticket,
                              const std::string& file_type,
                              bool delete_on_close);
 void CreateDialogSigninImpl(content::BrowserContext* browser_context,
                             gfx::NativeWindow modal_parent,
                             const base::Closure& callback);
 
 }  // namespace internal_cloud_print_helpers
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_DIALOG_CLOUD_INTERNAL_H_