add support for chrome apps

browser.js

@@ -12,6 +12,17 @@ exports.save = save;
 exports.load = load;
 exports.useColors = useColors;
 
+/**
+ * Use chrome.storage.local if we are in an app
+ */
+
+var storage;
+
+if (chrome.storage.local !== undefined)
+  storage = chrome.storage.local;
+else
+  storage = window.localStorage;
+
 /**
  * Colors.
  */
@@ -118,9 +129,9 @@ function log() {
 function save(namespaces) {
   try {
     if (null == namespaces) {
-      localStorage.removeItem('debug');
+      storage.removeItem('debug');
     } else {
-      localStorage.debug = namespaces;
+      storage.debug = namespaces;
     }
   } catch(e) {}
 }
@@ -135,7 +146,7 @@ function save(namespaces) {
 function load() {
   var r;
   try {
-    r = localStorage.debug;
+    r = storage.debug;
   } catch(e) {}
   return r;
 }