Implement getMediaDevices.

content/renderer/media/webrtc_uma_histograms_unittest.cc

Index: content/renderer/media/webrtc_uma_histograms_unittest.cc
diff --git a/content/renderer/media/webrtc_uma_histograms_unittest.cc b/content/renderer/media/webrtc_uma_histograms_unittest.cc
index 7d3a9199fcb2fac9b5156aefe1b284e069ef508c..0a090cf6f3c0890c49cd673c2620e66dd93e3b27 100644
--- a/content/renderer/media/webrtc_uma_histograms_unittest.cc
+++ b/content/renderer/media/webrtc_uma_histograms_unittest.cc
@@ -33,6 +33,19 @@ TEST(PerSessionWebRTCAPIMetrics, CallOngoingGetUserMedia) {
   metrics.LogUsageOnlyOnce(WEBKIT_GET_USER_MEDIA);
 }
 
+TEST(PerSessionWebRTCAPIMetrics, NoCallOngoingGetMediaDevices) {
+  MockPerSessionWebRTCAPIMetrics metrics;
+  EXPECT_CALL(metrics, LogUsage(_)).Times(1);
+  metrics.LogUsageOnlyOnce(WEBKIT_GET_MEDIA_DEVICES);
+}
+
+TEST(PerSessionWebRTCAPIMetrics, CallOngoingGetMediaDevices) {
+  MockPerSessionWebRTCAPIMetrics metrics;
+  metrics.IncrementStreamCounter();
+  EXPECT_CALL(metrics, LogUsage(WEBKIT_GET_MEDIA_DEVICES)).Times(1);
+  metrics.LogUsageOnlyOnce(WEBKIT_GET_MEDIA_DEVICES);
+}
+
 TEST(PerSessionWebRTCAPIMetrics, NoCallOngoingRTCPeerConnection) {
   MockPerSessionWebRTCAPIMetrics metrics;
   EXPECT_CALL(metrics, LogUsage(WEBKIT_RTC_PEER_CONNECTION));