Provide i18n support for descriptions in commands API.

chrome/common/extensions/extension_l10n_util.cc

Index: chrome/common/extensions/extension_l10n_util.cc
diff --git a/chrome/common/extensions/extension_l10n_util.cc b/chrome/common/extensions/extension_l10n_util.cc
index 07e86cc4c6b940aeb115e3ee10810ea6e6518edc..ecb2574c914ec95df2856f1c860b3de2a2f2eba4 100644
--- a/chrome/common/extensions/extension_l10n_util.cc
+++ b/chrome/common/extensions/extension_l10n_util.cc
@@ -167,6 +167,18 @@ bool LocalizeManifest(const extensions::MessageBundle& messages,
   if (!LocalizeManifestValue(keys::kLaunchWebURL, messages, manifest, error))
     return false;
 
+  // Initialize description of commmands.
+  base::DictionaryValue* commands_handler = NULL;
+  if (manifest->GetDictionary(keys::kCommands, &commands_handler)) {
+    for (DictionaryValue::Iterator iter(*commands_handler); !iter.IsAtEnd();
+         iter.Advance()) {
+      key.assign(base::StringPrintf("commands.%s.description",
+                                    iter.key().c_str()));
+      if (!LocalizeManifestValue(key, messages, manifest, error))
+        return false;
+    }
+  }
+
   // Add current locale key to the manifest, so we can overwrite prefs
   // with new manifest when chrome locale changes.
   manifest->SetString(keys::kCurrentLocale, CurrentLocaleOrDefault());