Fix SSSS so that devmode.js is returned when devmode is running


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9197 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/dev/core/src/com/google/gwt/core/linker/CrossSiteIframeLinker.java b/dev/core/src/com/google/gwt/core/linker/CrossSiteIframeLinker.java
index 1b84ea8..7a269c6 100644
--- a/dev/core/src/com/google/gwt/core/linker/CrossSiteIframeLinker.java
+++ b/dev/core/src/com/google/gwt/core/linker/CrossSiteIframeLinker.java
@@ -236,8 +236,9 @@
     toReturn.add(mappingArtifact);
     EmittedArtifact serializedMap;
     try {
-      serializedMap = emitString(logger, mappingArtifact.getSerialized(),
-          "compilation-mappings.txt");
+      String mappings = mappingArtifact.getSerialized();
+      mappings = mappings.concat("Devmode:" + getHostedFilename());
+      serializedMap = emitString(logger, mappings, "compilation-mappings.txt");
       // TODO(unnurg): make this Deploy
       serializedMap.setVisibility(Visibility.Public);
       toReturn.add(serializedMap);