Add GN files for chrome_elf

chrome/renderer/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("//build/config/features.gni")
 import("//tools/grit/grit_rule.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("../chrome_renderer.gypi") ],
                           "scope",
@@ skipping 140 matching lines @@
                              ".",
                              "..")
     }
   }
 
   if (is_mac) {
     deps += [ "//third_party/mach_override" ]
   }
   if (is_win) {
     deps += [
-      #'../chrome_elf/chrome_elf.gyp:chrome_elf',  TODO(GYP)
+      "//chrome_elf",
       "//third_party/wtl",
     ]
   }
   if (!is_android) {
     sources +=
         rebase_path(gypi_values.chrome_renderer_non_android_sources, ".", "..")
   }
 }
 
 # In GYP this is part of test_support_common.
@@ skipping 27 matching lines @@
     ]
   }
 
   if (enable_webrtc) {
     sources += [
       "media/mock_webrtc_logging_message_filter.cc",
       "media/mock_webrtc_logging_message_filter.h",
     ]
   }
 }