Prevent duplicate concurrent installs of the same extension

chrome/test/data/extensions/platform_apps/ephemeral_launcher/webstore_launch_app.js

Index: chrome/test/data/extensions/platform_apps/ephemeral_launcher/webstore_launch_app.js
diff --git a/chrome/test/data/extensions/platform_apps/ephemeral_launcher/webstore_launch_app.js b/chrome/test/data/extensions/platform_apps/ephemeral_launcher/webstore_launch_app.js
index c9d31be6250a0381561183043b04f45c1346e072..0c08950c1f5086f882ad32c6ec440b4b2fa7ac39 100644
--- a/chrome/test/data/extensions/platform_apps/ephemeral_launcher/webstore_launch_app.js
+++ b/chrome/test/data/extensions/platform_apps/ephemeral_launcher/webstore_launch_app.js
@@ -47,16 +47,16 @@ var tests = [
   // progress.
   function pendingInstall() {
     // First initiate a full install of the app.
-    var manifest = getManifest(kDefaultAppManifestPath);
+    var manifest = getManifest(kAppWithPermissionsManifestPath);
     chrome.webstorePrivate.beginInstallWithManifest3(
-        { "id": kDefaultAppId, "manifest": manifest },
+        { "id": kAppWithPermissionsId, "manifest": manifest },
         callbackPass(function(result) {
           assertEq(result, "");
 
           // Attempt to launch the app ephemerally.
           chrome.test.runWithUserGesture(function() {
             chrome.webstorePrivate.launchEphemeralApp(
-                kDefaultAppId,
+                kAppWithPermissionsId,
                 callbackFail(kInstallInProgressError, function(result) {
                   assertEq(kInstallInProgressCode, result);
                 }));