Replace remaining gflags usages with rtc_base/flags

webrtc/modules/audio_coding/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../../webrtc.gni")
 import("audio_coding.gni")
@@ skipping 1377 matching lines @@
       ":audio_coding_module_typedefs",
       ":audio_format_conversion",
       "..:module_api",
       "../../:webrtc_common",
       "../../rtc_base:rtc_base_approved",
       "../../system_wrappers",
       "../../system_wrappers:system_wrappers_default",
       "../../test:test_support",
       "../rtp_rtcp",
       "//testing/gtest",
-      "//third_party/gflags:gflags",
     ]
   }  # delay_test
 
   rtc_executable("insert_packet_with_timing") {
     testonly = true
     sources = [
       "test/Channel.cc",
       "test/Channel.h",
       "test/PCMFile.cc",
       "test/PCMFile.h",
       "test/insert_packet_with_timing.cc",
     ]
 
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
 
     deps = [
       ":audio_coding",
       ":audio_format_conversion",
       "..:module_api",
       "../../:webrtc_common",
       "../../rtc_base:rtc_base_approved",
       "../../system_wrappers",
       "../../system_wrappers:system_wrappers_default",
       "../../test:test_support",
       "../rtp_rtcp",
       "//testing/gtest",
-      "//third_party/gflags:gflags",
     ]
   }  # insert_packet_with_timing
 
   audio_decoder_unittests_resources =
       [ "../../../resources/audio_coding/testfile32kHz.pcm" ]
 
   if (is_ios) {
     bundle_data("audio_decoder_unittests_bundle_data") {
       testonly = true
       sources = audio_decoder_unittests_resources
@@ skipping 74 matching lines @@
         ]
       }
 
       deps += [
         ":neteq",
         ":neteq_test_tools",
         "../..:webrtc_common",
         "../../rtc_base:rtc_base_approved",
         "../../system_wrappers:system_wrappers_default",
         "../../test:test_support",
-        "//third_party/gflags",
       ]
     }
   }
 
   audio_codec_speed_tests_resources = [
     "//resources/audio_coding/music_stereo_48kHz.pcm",
     "//resources/audio_coding/speech_mono_16kHz.pcm",
     "//resources/audio_coding/speech_mono_32_48kHz.pcm",
   ]
 
@@ skipping 251 matching lines @@
     testonly = true
 
     sources = [
       "neteq/tools/rtp_analyze.cc",
     ]
 
     deps = [
       ":neteq",
       ":neteq_test_tools",
       ":pcm16b",
+      "../../rtc_base:rtc_base_approved",
       "../../system_wrappers:system_wrappers_default",
       "//testing/gtest",
-      "//third_party/gflags:gflags",
     ]
 
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
   }
 
   rtc_executable("neteq_opus_quality_test") {
     testonly = true
@@ skipping 17 matching lines @@
     testonly = true
 
     sources = [
       "neteq/test/neteq_speed_test.cc",
     ]
 
     deps = [
       ":neteq",
       ":neteq_test_support",
       "../..:webrtc_common",
+      "../../rtc_base:rtc_base_approved",
       "../../system_wrappers:system_wrappers_default",
       "../../test:test_support",
-      "//third_party/gflags",
     ]
   }
 
   rtc_executable("neteq_ilbc_quality_test") {
     testonly = true
 
     sources = [
       "neteq/test/neteq_ilbc_quality_test.cc",
     ]
 
@@ skipping 386 matching lines @@
 # webrtc/api/audio_codecs:builtin_audio_decoder_factory instead.
 # TODO(ossu): Remove this.
 rtc_source_set("builtin_audio_encoder_factory") {
   sources = [
     "codecs/builtin_audio_encoder_factory.h",
   ]
   deps = [
     "../../api/audio_codecs:builtin_audio_encoder_factory",
   ]
 }