Added build flag around the Intelligibility enhancer performance test code

BUG=chromium:641931

Review-Url: https://codereview.webrtc.org/2294093004
Cr-Commit-Position: refs/heads/master@{#14202}

webrtc/BUILD.gn

@@ -776,6 +776,13 @@ if (rtc_include_tests) {
       "//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

webrtc/modules/audio_processing/audio_processing_performance_unittest.cc

@@ -29,6 +29,14 @@
 #include "webrtc/system_wrappers/include/sleep.h"
 #include "webrtc/test/testsupport/perf_test.h"
 
+// Check to verify that the define for the intelligibility enhancer is properly
+// set.
+#if !defined(WEBRTC_INTELLIGIBILITY_ENHANCER) || \
+    (WEBRTC_INTELLIGIBILITY_ENHANCER != 0 &&     \
+     WEBRTC_INTELLIGIBILITY_ENHANCER != 1)
+#error "Set WEBRTC_INTELLIGIBILITY_ENHANCER to either 0 or 1"
+#endif
+
 namespace webrtc {
 
 namespace {
@@ -96,6 +104,7 @@ struct SimulationConfig {
       }
     }
 
+#if WEBRTC_INTELLIGIBILITY_ENHANCER == 1
     const SettingsType intelligibility_enhancer_settings[] = {
         SettingsType::kDefaultApmDesktopAndIntelligibilityEnhancer};
 
@@ -107,6 +116,7 @@ struct SimulationConfig {
         simulation_configs.push_back(SimulationConfig(sample_rate, settings));
       }
     }
+#endif
 
     const SettingsType beamformer_settings[] = {
         SettingsType::kDefaultApmDesktopAndBeamformer};

webrtc/webrtc_tests.gypi

@@ -454,6 +454,12 @@
         'webrtc',
       ],
       'conditions': [
+        ['enable_intelligibility_enhancer==1', {
+         'defines': ['WEBRTC_INTELLIGIBILITY_ENHANCER=1',],
+        }, {
+         'defines': ['WEBRTC_INTELLIGIBILITY_ENHANCER=0',],
+        }],
+
         ['OS=="android"', {
           'dependencies': [
             '<(DEPTH)/testing/android/native_test.gyp:native_test_native_code',