Revert of Refactor webrtc_perf_tests into several source_sets.

webrtc/modules/audio_processing/BUILD.gn

Index: webrtc/modules/audio_processing/BUILD.gn
diff --git a/webrtc/modules/audio_processing/BUILD.gn b/webrtc/modules/audio_processing/BUILD.gn
index 5cbd97d90a50d2590640965a9fbc0203694e3827..049a4e1d048ddc966c304915da60a1dc9d0150a6 100644
--- a/webrtc/modules/audio_processing/BUILD.gn
+++ b/webrtc/modules/audio_processing/BUILD.gn
@@ -411,35 +411,6 @@
     }
   }
 
-  rtc_source_set("audio_processing_perf_tests") {
-    # Has problems with autogenerated targets on Android and iOS
-    # Dependency chain (there may also be others):
-    #  //webrtc/modules/audio_processing:audio_processing_perf_tests -->
-    #  //webrtc/modules:modules_unittests --[private]-->
-    #  //webrtc/modules:modules_unittests_apk -->
-    #  //webrtc/modules:modules_unittests_apk__create -->
-    #  //webrtc/modules:modules_unittests_apk__create__finalize -->
-    #  //webrtc/modules:modules_unittests_apk__create__package --[private]-->
-    #  //webrtc/modules:_modules_unittests__library
-    check_includes = false
-    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 = [