GN: Introduce templates.

webrtc/modules/rtp_rtcp/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("../../build/webrtc.gni")
 
-source_set("rtp_rtcp") {
+rtc_source_set("rtp_rtcp") {
   sources = [
     "include/fec_receiver.h",
     "include/receive_statistics.h",
     "include/remote_ntp_time_estimator.h",
     "include/rtp_header_parser.h",
     "include/rtp_payload_registry.h",
     "include/rtp_receiver.h",
     "include/rtp_rtcp.h",
     "include/rtp_rtcp_defines.h",
     "mocks/mock_rtp_rtcp.h",
@@ skipping 131 matching lines @@
     "source/vp8_partition_aggregator.cc",
     "source/vp8_partition_aggregator.h",
   ]
 
   configs += [ "../..:common_config" ]
   public_configs = [ "../..:common_inherited_config" ]
 
   if (is_clang) {
     # Suppress warnings from Chrome's Clang plugins.
     # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
-    configs -= [ "//build/config/clang:find_bad_constructs" ]
+    configs_suppressions += [ "//build/config/clang:find_bad_constructs" ]
   }
 
   deps = [
     "../..:webrtc_common",
     "../../common_video",
     "../../system_wrappers",
     "../remote_bitrate_estimator",
   ]
 
   # TODO(jschuh): Bug 1348: fix this warning.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   if (is_win) {
     cflags = [
       # TODO(kjellander): Bug 261: fix this warning.
       "/wd4373",  # virtual function override.
     ]
   }
 }
 
 if (rtc_include_tests) {
-  executable("test_packet_masks_metrics") {
+  rtc_executable("test_packet_masks_metrics") {
     testonly = true
 
     sources = [
       "test/testFec/average_residual_loss_xor_codes.h",
       "test/testFec/test_packet_masks_metrics.cc",
     ]
 
     deps = [
       ":rtp_rtcp",
       "//build/config/sanitizers:deps",
       "//testing/gtest",
       "//webrtc/test:test_support_main",
     ]
   }  # test_packet_masks_metrics
 }