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

extensions/browser/api/usb/usb_event_router.cc

 // Copyright 2015 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/usb/usb_event_router.h"
 
 #include "device/core/device_client.h"
 #include "device/usb/usb_device.h"
 #include "extensions/browser/api/device_permissions_manager.h"
 #include "extensions/browser/api/usb/usb_guid_map.h"
 #include "extensions/common/api/usb.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "extensions/common/permissions/usb_device_permission.h"
 
-namespace usb = extensions::core_api::usb;
+namespace usb = extensions::api::usb;
 
 using content::BrowserThread;
 using device::UsbDevice;
 using device::UsbService;
 
 namespace extensions {
 
 namespace {
 
 // Returns true iff the given extension has permission to receive events
@@ skipping 97 matching lines @@
 }
 
 template <>
 void BrowserContextKeyedAPIFactory<
     UsbEventRouter>::DeclareFactoryDependencies() {
   DependsOn(DevicePermissionsManagerFactory::GetInstance());
   DependsOn(UsbGuidMap::GetFactoryInstance());
 }
 
 }  // extensions