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

extensions/browser/api/document_scan/document_scan_interface.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_DOCUMENT_SCAN_DOCUMENT_SCAN_INTERFACE_H_
 #define EXTENSIONS_BROWSER_API_DOCUMENT_SCAN_DOCUMENT_SCAN_INTERFACE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 
 namespace extensions {
 
-namespace core_api {
+namespace api {
 
 class DocumentScanInterface {
  public:
   struct ScannerDescription {
     ScannerDescription();
     ~ScannerDescription();
     std::string name;
     std::string manufacturer;
     std::string model;
     std::string scanner_type;
@@ skipping 18 matching lines @@
                     const ScanResultsCallback& callback) = 0;
   virtual void ListScanners(const ListScannersResultsCallback& callback) = 0;
 
   // Creates a platform-specific DocumentScanInterface instance.
   static DocumentScanInterface* CreateInstance();
 
  protected:
   DocumentScanInterface();
 };
 
-}  // namespace core_api
+}  // namespace api
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_DOCUMENT_SCAN_DOCUMENT_SCAN_INTERFACE_H_