Move NaClModulesHandler to src/extensions

chrome/common/BUILD.gn

 # 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.
 
 import("//tools/grit/grit_rule.gni")
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
     [ rebase_path("../chrome_common.gypi") ],
     "scope",
@@ skipping 113 matching lines @@
       ]
     }
     deps += [ "//breakpad:client" ]
   }
   if (is_mac) {
     sources += rebase_path(
         gypi_values.chrome_common_mac_sources,
         ".", "//chrome")
   }
 
-  if (enable_nacl) {
-    deps += [
-      #'<(DEPTH)/components/nacl.gyp:nacl_common',  TODO(GYP)
-    ]
-    sources += [
-      "extensions/manifest_handlers/nacl_modules_handler.cc",
-      "extensions/manifest_handlers/nacl_modules_handler.h",
-    ]
-  }
-
   # Printing.
   if (printing_mode == 0) {
     sources -= [
       "print_messages.cc",
       "print_messages.h",
     ]
   } else {
     deps += [ "//printing" ]
     if (printing_mode == 1) {
       # Full printing support.
@@ skipping 150 matching lines @@
     "//components/bookmarks/common",
     "//third_party/widevine/cdm:version_h",
   ]
 
   if (enable_nacl) {
     deps += [
       #'../components/nacl.gyp:nacl_switches',  TODO(GYP)
     ]
   }
 }