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

extensions/browser/api/bluetooth_low_energy/bluetooth_low_energy_api.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/bluetooth_low_energy/bluetooth_low_energy_api.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/strings/stringprintf.h"
 #include "content/public/browser/browser_thread.h"
 #include "extensions/browser/api/bluetooth_low_energy/bluetooth_api_advertisement.h"
 #include "extensions/browser/api/bluetooth_low_energy/utils.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/common/api/bluetooth/bluetooth_manifest_data.h"
 #include "extensions/common/api/bluetooth_low_energy.h"
 #include "extensions/common/permissions/permissions_data.h"
 
 using content::BrowserContext;
 using content::BrowserThread;
 
-namespace apibtle = extensions::core_api::bluetooth_low_energy;
+namespace apibtle = extensions::api::bluetooth_low_energy;
 
 namespace extensions {
 
 namespace {
 
 const char kErrorAdapterNotInitialized[] =
     "Could not initialize Bluetooth adapter";
 const char kErrorAlreadyConnected[] = "Already connected";
 const char kErrorAlreadyNotifying[] = "Already notifying";
 const char kErrorAuthenticationFailed[] = "Authentication failed";
@@ skipping 122 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 }
 
 BluetoothLowEnergyAPI::~BluetoothLowEnergyAPI() {
 }
 
 void BluetoothLowEnergyAPI::Shutdown() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 }
 
-namespace core_api {
+namespace api {
 
 BluetoothLowEnergyExtensionFunction::BluetoothLowEnergyExtensionFunction() {
 }
 
 BluetoothLowEnergyExtensionFunction::~BluetoothLowEnergyExtensionFunction() {
 }
 
 bool BluetoothLowEnergyExtensionFunction::RunAsync() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
@@ skipping 827 matching lines @@
     case device::BluetoothAdvertisement::ErrorCode::
         ERROR_ADVERTISEMENT_DOES_NOT_EXIST:
       SetError(kStatusAdvertisementDoesNotExist);
       break;
     default:
       SetError(kErrorOperationFailed);
   }
   SendResponse(false);
 }
 
-}  // namespace core_api
+}  // namespace api
 }  // namespace extensions