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

extensions/browser/api/cast_channel/cast_message_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_message_util.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/values.h"
 #include "extensions/common/api/cast_channel.h"
 #include "extensions/common/api/cast_channel/cast_channel.pb.h"
 
 namespace {
 static const char kAuthNamespace[] =
     "urn:x-cast:com.google.cast.tp.deviceauth";
 // Sender and receiver IDs to use for platform messages.
 static const char kPlatformSenderId[] = "sender-0";
 static const char kPlatformReceiverId[] = "receiver-0";
 }  // namespace
 
 namespace extensions {
-namespace core_api {
+namespace api {
 namespace cast_channel {
 
 bool MessageInfoToCastMessage(const MessageInfo& message,
                               CastMessage* message_proto) {
   DCHECK(message_proto);
   if (!message.data)
     return false;
 
   message_proto->set_protocol_version(CastMessage_ProtocolVersion_CASTV2_1_0);
   message_proto->set_source_id(message.source_id);
@@ skipping 116 matching lines @@
   message_proto->set_namespace_(kAuthNamespace);
   message_proto->set_payload_type(CastMessage_PayloadType_BINARY);
   message_proto->set_payload_binary(auth_message_string);
 }
 
 bool IsAuthMessage(const CastMessage& message) {
   return message.namespace_() == kAuthNamespace;
 }
 
 }  // namespace cast_channel
-}  // namespace core_api
+}  // namespace api
 }  // namespace extensions