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

chrome/browser/extensions/api/tabs/tabs_api.cc

 // Copyright (c) 2012 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 "chrome/browser/extensions/api/tabs/tabs_api.h"
 
 #include <algorithm>
 #include <limits>
 #include <vector>
 
@@ skipping 94 matching lines @@
 using content::Referrer;
 using content::WebContents;
 using ui_zoom::ZoomController;
 
 namespace extensions {
 
 namespace windows = api::windows;
 namespace keys = tabs_constants;
 namespace tabs = api::tabs;
 
-using core_api::extension_types::InjectDetails;
+using api::extension_types::InjectDetails;
 
 namespace {
 
 bool GetBrowserFromWindowID(ChromeUIThreadExtensionFunction* function,
                             int window_id,
                             Browser** browser) {
   std::string error;
   Browser* result;
   result =
       ExtensionTabUtil::GetBrowserFromWindowID(function, window_id, &error);
@@ skipping 1900 matching lines @@
   ZoomModeToZoomSettings(zoom_mode, &zoom_settings);
   zoom_settings.default_zoom_factor.reset(new double(
       content::ZoomLevelToZoomFactor(zoom_controller->GetDefaultZoomLevel())));
 
   results_ = api::tabs::GetZoomSettings::Results::Create(zoom_settings);
   SendResponse(true);
   return true;
 }
 
 }  // namespace extensions