Refactor webrtc_perf_tests into several source_sets.

webrtc/modules/audio_processing/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/config/arm.gni")
 import("//third_party/protobuf/proto_library.gni")
@@ skipping 393 matching lines @@
 
     if (rtc_enable_intelligibility_enhancer) {
       public_deps += [ ":intelligibility_proc" ]
     }
 
     if (rtc_enable_protobuf) {
       public_deps += [ ":audioproc_unittest_proto" ]
     }
   }
 
+  rtc_source_set("audio_processing_perf_tests") {
+    testonly = true
+    sources = [
+      "audio_processing_performance_unittest.cc",
+      "level_controller/level_controller_complexity_unittest.cc",
+      "residual_echo_detector_complexity_unittest.cc",
+    ]
+    deps = [
+      ":audio_processing",
+      ":audioproc_test_utils",
+      "//testing/gtest",
+    ]
+    if (rtc_enable_intelligibility_enhancer) {
+      defines = [ "WEBRTC_INTELLIGIBILITY_ENHANCER=1" ]
+    } else {
+      defines = [ "WEBRTC_INTELLIGIBILITY_ENHANCER=0" ]
+    }
+  }
+
   rtc_executable("unpack_aecdump") {
     testonly = true
     sources = [
       "test/unpack.cc",
     ]
 
     deps = [
       ":audio_processing",
       ":audioproc_debug_proto",
       ":audioproc_protobuf_utils",
@@ skipping 135 matching lines @@
       ]
 
       deps = [
         ":audioproc_debug_proto",
         "../..:webrtc_common",
         "../../base:rtc_base_approved",
       ]
     }
   }
 }