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

extensions/browser/api/document_scan/document_scan_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/document_scan/document_scan_api.h"
 
 #include <algorithm>
 
 #include "content/public/browser/browser_thread.h"
 #include "extensions/browser/extension_system.h"
 
 using content::BrowserThread;
 
 namespace {
 
 const char kScannerNotAvailable[] = "Scanner not available";
 const char kUserGestureRequiredError[] =
     "User gesture required to perform scan";
 
 }  // namespace
 
 namespace extensions {
 
-namespace core_api {
+namespace api {
 
 DocumentScanScanFunction::DocumentScanScanFunction()
     : document_scan_interface_(DocumentScanInterface::CreateInstance()) {
 }
 
 DocumentScanScanFunction::~DocumentScanScanFunction() {
 }
 
 bool DocumentScanScanFunction::Prepare() {
   set_work_thread_id(BrowserThread::FILE);
@@ skipping 77 matching lines @@
   AsyncWorkCompleted();
 
   // Balance the AddRef in AsyncWorkStart().
   Release();
 }
 
 bool DocumentScanScanFunction::Respond() {
   return error_.empty();
 }
 
-}  // namespace core_api
+}  // namespace api
 
 }  // namespace extensions