Update existing uses of /wd4267 to use the GN config

media/audio/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/linux/pkg_config.gni")
 import("//media/media_options.gni")
 
 # When libpulse is not directly linked, use stubs to allow for dlopening of the
 # binary.
 if (!link_pulseaudio) {
@@ skipping 225 matching lines @@
         packages = [ "libpulse" ]
       }
       configs += [ ":libpulse" ]
     } else {
       # TODO(ajwong): Technically, this dl should go in the action.
       libs += [ "dl" ]
       deps += [ ":pulse_generate_stubs" ]
       sources += get_target_outputs(":pulse_generate_stubs")
     }
   }
+
+  configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 }
 
 source_set("test_support") {
   testonly = true
   sources = [
     "audio_unittest_util.cc",
     "audio_unittest_util.h",
     "mock_audio_manager.cc",
     "mock_audio_manager.h",
     "mock_audio_source_callback.cc",
@@ skipping 71 matching lines @@
     ]
   }
 
   if (use_alsa) {
     sources += [
       "alsa/alsa_output_unittest.cc",
       "audio_low_latency_input_output_unittest.cc",
     ]
   }
 }