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

extensions/browser/api/document_scan/document_scan_interface_chromeos.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/document_scan/document_scan_interface_chromeos.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/lorgnette_manager_client.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace {
 
 const char kImageScanFailedError[] = "Image scan failed";
 const char kScannerImageMimeTypePng[] = "image/png";
 const char kPngImageDataUrlPrefix[] = "data:image/png;base64,";
 
 }  // namespace
 
 namespace extensions {
 
-namespace core_api {
+namespace api {
 
 DocumentScanInterfaceChromeos::DocumentScanInterfaceChromeos()
     : lorgnette_manager_client_(nullptr) {
 }
 
 DocumentScanInterfaceChromeos::~DocumentScanInterfaceChromeos() {
 }
 
 void DocumentScanInterfaceChromeos::ListScanners(
     const ListScannersResultsCallback& callback) {
@@ skipping 85 matching lines @@
     CHECK(lorgnette_manager_client_);
   }
   return lorgnette_manager_client_;
 }
 
 // static
 DocumentScanInterface* DocumentScanInterface::CreateInstance() {
   return new DocumentScanInterfaceChromeos();
 }
 
-}  // namespace core_api
+}  // namespace api
 
 }  // namespace extensions