Prevent unnecessary prompts when unpacked extensions use chrome.permissions.request.

chrome/test/data/extensions/api_test/permissions/optional/background.js

Index: chrome/test/data/extensions/api_test/permissions/optional/background.js
diff --git a/chrome/test/data/extensions/api_test/permissions/optional/background.js b/chrome/test/data/extensions/api_test/permissions/optional/background.js
index 8e3d1836c70bd2304f69ab6f770cf5a7449323f9..e904231c31fac4c0acd9f4b2c15b061afd9891a1 100644
--- a/chrome/test/data/extensions/api_test/permissions/optional/background.js
+++ b/chrome/test/data/extensions/api_test/permissions/optional/background.js
@@ -155,6 +155,16 @@ chrome.test.getConfig(function(config) {
       }));
     },
 
+    // These permissions should be on the granted list because they're on the
+    // extension's default permission list.
+    function requestGrantedPermission() {
+      chrome.permissions.request(
+          {permissions: ['management'], origins: ['http://a.com/*']},
+          pass(function(granted) {
+        assertTrue(granted);
+      }));
+    },
+
     // You can't remove required permissions.
     function removeRequired() {
       chrome.permissions.remove(
@@ -304,7 +314,7 @@ chrome.test.getConfig(function(config) {
       });
 
       chrome.permissions.request(
-          {permissions: ['tabs']}, pass(function(granted) {
+          {permissions: ['tabs', 'management']}, pass(function(granted) {
         assertTrue(granted);
         chrome.permissions.remove(
             {permissions: ['tabs']}, pass(function() {