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

extensions/common/api/printer_provider/usb_printer_manifest_data.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/common/api/printer_provider/usb_printer_manifest_data.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "device/usb/usb_device.h"
 #include "device/usb/usb_device_filter.h"
 #include "extensions/common/api/extensions_manifest_types.h"
@@ skipping 13 matching lines @@
 const UsbPrinterManifestData* UsbPrinterManifestData::Get(
     const Extension* extension) {
   return static_cast<UsbPrinterManifestData*>(
       extension->GetManifestData(manifest_keys::kUsbPrinters));
 }
 
 // static
 scoped_ptr<UsbPrinterManifestData> UsbPrinterManifestData::FromValue(
     const base::Value& value,
     base::string16* error) {
-  scoped_ptr<core_api::extensions_manifest_types::UsbPrinters> usb_printers =
-      core_api::extensions_manifest_types::UsbPrinters::FromValue(value, error);
+  scoped_ptr<api::extensions_manifest_types::UsbPrinters> usb_printers =
+      api::extensions_manifest_types::UsbPrinters::FromValue(value, error);
   if (!usb_printers) {
     return nullptr;
   }
 
   scoped_ptr<UsbPrinterManifestData> result(new UsbPrinterManifestData());
   for (const auto& input : usb_printers->filters) {
     DCHECK(input.get());
     UsbDeviceFilter output;
     output.SetVendorId(input->vendor_id);
     if (input->product_id && input->interface_class) {
@@ skipping 17 matching lines @@
   }
   return result.Pass();
 }
 
 bool UsbPrinterManifestData::SupportsDevice(
     const scoped_refptr<device::UsbDevice>& device) const {
   return UsbDeviceFilter::MatchesAny(device, filters_);
 }
 
 }  // namespace extensions