Added build flag around the Intelligibility enhancer performance test code

webrtc/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.
 
 # TODO(kjellander): Rebase this to webrtc/build/common.gypi changes after r6330.
 
@@ skipping 761 matching lines @@
       "modules/remote_bitrate_estimator:bwe_simulator",
       "modules/rtp_rtcp",
       "test:channel_transport",
       "test:test_common",
       "test:test_main",
       "test:test_renderer",
       "voice_engine",
       "//testing/gmock",
       "//testing/gtest",
     ]
+
+    if (rtc_enable_intelligibility_enhancer) {
+      defines = [ "WEBRTC_INTELLIGIBILITY_ENHANCER=1" ]
+    } else {
+      defines = [ "WEBRTC_INTELLIGIBILITY_ENHANCER=0" ]
+    }
+
     if (is_android) {
       deps += [ "//testing/android/native_test:native_test_native_code" ]
       data = webrtc_perf_tests_resources
       shard_timeout = 2700
     }
     if (is_ios) {
       deps += [ ":webrtc_perf_tests_bundle_data" ]
     }
     if (is_clang) {
       # Suppress warnings from the Chromium Clang plugin.
@@ skipping 29 matching lines @@
     if (is_mac) {
       sources += [ "base/macsocketserver_unittest.cc" ]
     }
     if (is_clang) {
       # Suppress warnings from the Chromium Clang plugin.
       # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
   }
 }