Replace WebUI::tab_contents() with web_contents() and switch all users to use web_contents.h inst...

chrome/browser/ui/webui/cloud_print_signin_dialog.h

Index: chrome/browser/ui/webui/cloud_print_signin_dialog.h
===================================================================
--- chrome/browser/ui/webui/cloud_print_signin_dialog.h	(revision 116011)
+++ chrome/browser/ui/webui/cloud_print_signin_dialog.h	(working copy)
@@ -6,14 +6,16 @@
 #define CHROME_BROWSER_UI_WEBUI_CLOUD_PRINT_SIGNIN_DIALOG_H_
 #pragma once
 
-class TabContents;
+namespace content {
+class WebContents;
+}
 
 namespace cloud_print_signin_dialog {
 // Creates a dialog for signing into cloud print.
 // The dialog will close and refresh |parent_tab| when complete.
 // Called on the UI thread. Even though this starts up a modal
 // dialog, it will return immediately. The dialog is handled asynchronously.
-void CreateCloudPrintSigninDialog(TabContents* parent_tab);
+void CreateCloudPrintSigninDialog(content::WebContents* parent_tab);
 }
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CLOUD_PRINT_SIGNIN_DIALOG_H_