Bug 1186498 - Let the "cached" of transferredSize can be localized. r=jsantell

browser/devtools/netmonitor/netmonitor-view.js

@@ -1667,7 +1667,7 @@ RequestsMenuView.prototype = Heritage.extend(WidgetMethods, {
           text = L10N.getStr("networkMenu.sizeUnavailable");
         }
         else if(aValue === "cached") {
-          text = aValue;
+          text = L10N.getStr("networkMenu.sizeCached");
           node.classList.add('theme-comment');
         }
         else {

browser/locales/en-US/chrome/browser/devtools/netmonitor.properties

@@ -179,6 +179,11 @@ networkMenu.sizeKB=%S KB
 # unavailable.
 networkMenu.sizeUnavailable=—
 
+# LOCALIZATION NOTE (networkMenu.sizeCached): This is the label displayed
+# in the network menu specifying the transferred of a request is
+# cached.
+networkMenu.sizeCached=cached
+
 # LOCALIZATION NOTE (networkMenu.totalMS): This is the label displayed
 # in the network menu specifying the time for a request to finish (in milliseconds).
 networkMenu.totalMS=→ %S ms