Disable flaky test in ChromeOS

WebRtcVideoCaptureServiceEnumerationBrowserTest.
AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange
is flaky on ChromeOS.

Bug: 1126373
Change-Id: I60a41db047d73d45cc3075130fda47ff9977fb8c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2421499
Commit-Queue: Palak Agarwal <agpalak@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809339}

content/browser/webrtc/webrtc_video_capture_service_enumeration_browsertest.cc

@@ -28,15 +28,6 @@
 
 namespace content {
 
-// The mediadevices.ondevicechange event is currently not supported on Android.
-#if defined(OS_ANDROID)
-#define MAYBE_AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange \
-  DISABLED_AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange
-#else
-#define MAYBE_AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange \
-  AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange
-#endif
-
 namespace {
 
 enum class ServiceApi { kSingleClient, kMultiClient };
@@ -274,6 +265,16 @@ IN_PROC_BROWSER_TEST_P(WebRtcVideoCaptureServiceEnumerationBrowserTest,
   DisconnectFromService();
 }
 
+// The mediadevices.ondevicechange event is currently not supported on Android.
+// Flaky on ChromeOS.  https://crbug.com/1126373
+#if defined(OS_ANDROID) || defined(OS_CHROMEOS)
+#define MAYBE_AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange \
+  DISABLED_AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange
+#else
+#define MAYBE_AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange \
+  AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange
+#endif
+
 IN_PROC_BROWSER_TEST_P(
     WebRtcVideoCaptureServiceEnumerationBrowserTest,
     MAYBE_AddingAndRemovingVirtualDeviceTriggersMediaElementOnDeviceChange) {