[Extensions Binding] Update ArgumentSpec to support dictionary enums

extensions/renderer/argument_spec_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/memory/ptr_util.h"
 #include "base/values.h"
 #include "extensions/renderer/api_binding_test_util.h"
 #include "extensions/renderer/argument_spec.h"
 #include "gin/converter.h"
 #include "gin/public/isolate_holder.h"
@@ skipping 112 matching lines @@
     ExpectSuccess(spec, "'foo'", "'foo'");
     ExpectSuccess(spec, "'bar'", "'bar'");
     ExpectFailure(spec, "['foo']");
     ExpectFailure(spec, "'fo'");
     ExpectFailure(spec, "'foobar'");
     ExpectFailure(spec, "'baz'");
     ExpectFailure(spec, "''");
   }
 
   {
+    ArgumentSpec spec(*ValueFromString(
+        "{'type': 'string', 'enum': [{'name': 'foo'}, {'name': 'bar'}]}"));
+    ExpectSuccess(spec, "'foo'", "'foo'");
+    ExpectSuccess(spec, "'bar'", "'bar'");
+    ExpectFailure(spec, "['foo']");
+    ExpectFailure(spec, "'fo'");
+    ExpectFailure(spec, "'foobar'");
+    ExpectFailure(spec, "'baz'");
+    ExpectFailure(spec, "''");
+  }
+
+  {
     ArgumentSpec spec(*ValueFromString("{'type': 'boolean'}"));
     ExpectSuccess(spec, "true", "true");
     ExpectSuccess(spec, "false", "false");
     ExpectFailure(spec, "1");
     ExpectFailure(spec, "'true'");
     ExpectFailure(spec, "null");
   }
 
   {
     ArgumentSpec spec(
@@ skipping 125 matching lines @@
         "{'type': 'array', 'items': {'$ref': 'refEnum'}}";
     ArgumentSpec spec(*ValueFromString(kRefEnumListSpec));
     ExpectSuccess(spec, "['alpha']", "['alpha']");
     ExpectSuccess(spec, "['alpha', 'alpha']", "['alpha','alpha']");
     ExpectSuccess(spec, "['alpha', 'beta']", "['alpha','beta']");
     ExpectFailure(spec, "['alpha', 'beta', 'gamma']");
   }
 }
 
 }  // namespace extensions