iOS audio session isInterrupted flag does not get reset correctly:

webrtc/modules/audio_device/BUILD.gn

Index: webrtc/modules/audio_device/BUILD.gn
diff --git a/webrtc/modules/audio_device/BUILD.gn b/webrtc/modules/audio_device/BUILD.gn
index ab0b4f5b32f15b1b14606a5c098b0c9dbbf04d76..de9096ee6ff16c98017e91f375e91da116803196 100644
--- a/webrtc/modules/audio_device/BUILD.gn
+++ b/webrtc/modules/audio_device/BUILD.gn
@@ -174,6 +174,7 @@ rtc_static_library("audio_device") {
       }
       if (is_ios) {
         public_deps = [
+          "../../base:gtest_prod",
           "../../base:rtc_base",
           "../../sdk:rtc_sdk_common_objc",
         ]
@@ -298,7 +299,7 @@ if (rtc_include_tests) {
     if (is_ios) {
       sources += [ "ios/objc/RTCAudioSessionTest.mm" ]
       if (target_cpu != "x64") {
-        sources += [ "ios/audio_device_unittest_ios.cc" ]
+        sources += [ "ios/audio_device_unittest_ios.mm" ]
       }
       deps += [ "//third_party/ocmock" ]
     }