Add support for JavaScript alert, confirm, prompt and onbeforeunload dialogs (issue #507).

- Add CefJSDialogHandler and CefJSDialogCallback interfaces.
- Add default dialog implementations for Windows and Mac OS-X.
- Add "JavaScript Dialogs" example to cefclient.
- Change TestHandler::AddResource to ignore the query component when matching URLs.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@594 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef_dll/resource.h

@@ -6,6 +6,13 @@
 // Avoid files associated with MacOS
 #define _X86_
 
+#define IDD_ALERT                 130
+#define IDD_CONFIRM               131
+#define IDD_PROMPT                132
+#define IDC_PROMPTEDIT            1000
+#define IDC_DIALOGTEXT            1001
+
+
 // Next default values for new objects
 // 
 #ifdef APSTUDIO_INVOKED