Clearly label incognito profiles in the appcache-internals webui.

content/browser/appcache/appcache_internals_ui.cc

Index: content/browser/appcache/appcache_internals_ui.cc
diff --git a/content/browser/appcache/appcache_internals_ui.cc b/content/browser/appcache/appcache_internals_ui.cc
index f14909da53da56eed32a067e98012ecb9ed8c8d4..dfd06b167bd4dd3af6bdc3e38c21ca1c4f0ff354 100644
--- a/content/browser/appcache/appcache_internals_ui.cc
+++ b/content/browser/appcache/appcache_internals_ui.cc
@@ -413,9 +413,12 @@ void AppCacheInternalsUI::GetFileDetails(const base::ListValue* args) {
 void AppCacheInternalsUI::OnAllAppCacheInfoReady(
     scoped_refptr<AppCacheInfoCollection> collection,
     const base::FilePath& partition_path) {
+  std::string incognito_path_prefix;
+  if (browser_context()->IsOffTheRecord())
+    incognito_path_prefix = "Incognito ";
   web_ui()->CallJavascriptFunction(
       kFunctionOnAllAppCacheInfoReady,
-      base::StringValue(partition_path.AsUTF8Unsafe()),
+      base::StringValue(incognito_path_prefix + partition_path.AsUTF8Unsafe()),
       *GetListValueFromAppCacheInfoCollection(collection.get()));
 }