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

extensions/browser/api/bluetooth_low_energy/bluetooth_low_energy_api.h

 // 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.
 
 #ifndef EXTENSIONS_BROWSER_API_BLUETOOTH_LOW_ENERGY_BLUETOOTH_LOW_ENERGY_API_H_
 #define EXTENSIONS_BROWSER_API_BLUETOOTH_LOW_ENERGY_BLUETOOTH_LOW_ENERGY_API_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "device/bluetooth/bluetooth_advertisement.h"
 #include "extensions/browser/api/api_resource_manager.h"
@@ skipping 32 matching lines @@
   static const bool kServiceIsNULLWhileTesting = true;
 
  private:
   friend class BrowserContextKeyedAPIFactory<BluetoothLowEnergyAPI>;
 
   scoped_ptr<BluetoothLowEnergyEventRouter> event_router_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothLowEnergyAPI);
 };
 
-namespace core_api {
+namespace api {
 
 // Base class for bluetoothLowEnergy API functions. This class handles some of
 // the common logic involved in all API functions, such as checking for
 // platform support and returning the correct error.
 class BluetoothLowEnergyExtensionFunction : public AsyncExtensionFunction {
  public:
   BluetoothLowEnergyExtensionFunction();
 
  protected:
   ~BluetoothLowEnergyExtensionFunction() override;
@@ skipping 326 matching lines @@
 
  private:
   void SuccessCallback(int advertisement_id);
   void ErrorCallback(int advertisement_id,
                      device::BluetoothAdvertisement::ErrorCode status);
 
   // The instance ID of the requested descriptor.
   std::string instance_id_;
 };
 
-}  // namespace core_api
+}  // namespace api
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_BLUETOOTH_LOW_ENERGY_BLUETOOTH_LOW_ENERGY_API_H_