Generate all extension schema namespaces as "api" and instead vary the generated bundle names.

extensions/browser/api/cast_channel/cast_test_util.cc

 // Copyright 2014 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 "extensions/browser/api/cast_channel/cast_test_util.h"
 
 namespace extensions {
-namespace core_api {
+namespace api {
 namespace cast_channel {
 
 const char kTestExtensionId[] = "ddchlicdkolnonkihahngkmmmjnjlkkf";
 
 MockCastTransport::MockCastTransport() {
 }
 MockCastTransport::~MockCastTransport() {
 }
 
 CastTransport::Delegate* MockCastTransport::current_delegate() const {
@@ skipping 20 matching lines @@
 net::IPEndPoint CreateIPEndPointForTest() {
   net::IPAddressNumber number;
   number.push_back(192);
   number.push_back(168);
   number.push_back(1);
   number.push_back(1);
   return net::IPEndPoint(number, 8009);
 }
 
 }  // namespace cast_channel
-}  // namespace core_api
+}  // namespace api
 }  // namespace extensions