Implementation of the "Redirect URLs to Packaged Apps" feature.

chrome/renderer/resources/extensions/app_runtime_custom_bindings.js

Index: chrome/renderer/resources/extensions/app_runtime_custom_bindings.js
diff --git a/chrome/renderer/resources/extensions/app_runtime_custom_bindings.js b/chrome/renderer/resources/extensions/app_runtime_custom_bindings.js
index 0f3a0f784daa5cc6874c6d2ae5c3b2a72a5fb9d7..075ac31e3fd7db25d17590b4b4e3f002aa1ffdbd 100644
--- a/chrome/renderer/resources/extensions/app_runtime_custom_bindings.js
+++ b/chrome/renderer/resources/extensions/app_runtime_custom_bindings.js
@@ -52,8 +52,14 @@ chromeHidden.Event.registerArgumentMassager('app.runtime.onLaunched',
     function(args, dispatch) {
   var launchData = args[0];
 
-  if (launchData && typeof launchData.id !== 'undefined') {
-    // new-style dispatch.
+  if (!launchData) {
+    dispatch([]);
+    return;
+  }
+
+  if (launchData.items) {
+    // An onLaunched corresponding to file_handlers in the app's manifest.
+    // NOTE: Using the new-style dispatch.
     var items = []
     var numItems = launchData.items.length;
     var itemLoaded = function(err, item) {
@@ -79,10 +85,10 @@ chromeHidden.Event.registerArgumentMassager('app.runtime.onLaunched',
         itemLoaded(fileError);
       });
     });
-  } else if (launchData) {
-    dispatch([launchData]);
   } else {
-    dispatch([]);
+    // Default case. This currently covers an onLaunched corresponding to
+    // url_handlers in the app's manifest.
+    dispatch([launchData]);
   }
 });