Update location of MissingPlugin app.

Patch by: bobv
Review by: abowers

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@7083 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/dev/core/src/com/google/gwt/core/ext/linker/impl/hosted.html b/dev/core/src/com/google/gwt/core/ext/linker/impl/hosted.html
index 11eb780..08c184c 100644
--- a/dev/core/src/com/google/gwt/core/ext/linker/impl/hosted.html
+++ b/dev/core/src/com/google/gwt/core/ext/linker/impl/hosted.html
@@ -253,7 +253,7 @@
         } catch (e) {
         }
       }
-      loadIframe("http://gwt-dev-plugin-missing.appspot.com/");
+      loadIframe("http://gwt.google.com/samples/MissingPlugin");
     } else {
       if (plugin.connect(url, topWin.__gwt_SessionID, $hosted, $moduleName,
           $hostedHtmlVersion)) {