Cleanup: Remove most enable_extensions logic in chrome/ extensions code.

chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.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 "chrome/renderer/extensions/chrome_extensions_dispatcher_delegate.h"
 
 #include "base/command_line.h"
 #include "base/sha1.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 77 matching lines @@
         blink::WebString::fromUTF8(content::kChromeUIScheme),
         blink::WebString::fromUTF8(chrome::kChromeUIExtensionIconHost),
         false);
   }
 }
 
 void ChromeExtensionsDispatcherDelegate::RegisterNativeHandlers(
     extensions::Dispatcher* dispatcher,
     extensions::ModuleSystem* module_system,
     extensions::ScriptContext* context) {
-#if !defined(ENABLE_EXTENSIONS)
-  return;
-#endif
   module_system->RegisterNativeHandler(
       "app",
       scoped_ptr<NativeHandler>(
           new extensions::AppBindings(dispatcher, context)));
   module_system->RegisterNativeHandler(
       "sync_file_system",
       scoped_ptr<NativeHandler>(
           new extensions::SyncFileSystemCustomBindings(context)));
   module_system->RegisterNativeHandler(
       "enterprise_platform_keys_natives",
@@ skipping 210 matching lines @@
   if (!extension)
     return;
 
   extension->permissions_data()->UpdateTabSpecificPermissions(
       tab_id,
       new extensions::PermissionSet(extensions::APIPermissionSet(),
                                     extensions::ManifestPermissionSet(),
                                     origin_set,
                                     extensions::URLPatternSet()));
 }