Remove the limit of number of commands per extension, but keep the limit of 4 shortcuts per extensi…

chrome/test/data/extensions/manifest_tests/command_too_many.json

Index: chrome/test/data/extensions/manifest_tests/command_too_many.json
===================================================================
--- chrome/test/data/extensions/manifest_tests/command_too_many.json	(revision 190361)
+++ chrome/test/data/extensions/manifest_tests/command_too_many.json	(working copy)
@@ -1,5 +1,5 @@
 {
-  "name": "Command test - too many commands",
+  "name": "Command test - too many commands with shortcuts",
   "manifest_version": 2,
   "version": "2",
   "commands": {
@@ -24,4 +24,4 @@
       "description": "feature5"
     }
   }
- }
+}