Update makefiles after merge of Chromium at 269467

This commit was generated by merge_from_chromium.py.

Change-Id: Ia7fa63f08e76ed00046e843056e652b39cbac21c
diff --git a/modules/audio_conference_mixer.target.darwin-arm.mk b/modules/audio_conference_mixer.target.darwin-arm.mk
index fb38ef8..7b0450c 100644
--- a/modules/audio_conference_mixer.target.darwin-arm.mk
+++ b/modules/audio_conference_mixer.target.darwin-arm.mk
@@ -89,6 +89,7 @@
 	'-DCLD_VERSION=1' \
 	'-DENABLE_PRINTING=1' \
 	'-DENABLE_MANAGED_USERS=1' \
+	'-DVIDEO_HOLE=1' \
 	'-DWEBRTC_RESTRICT_LOGGING' \
 	'-DWEBRTC_MODULE_UTILITY_VIDEO' \
 	'-DWEBRTC_CHROMIUM_BUILD' \
@@ -195,6 +196,7 @@
 	'-DCLD_VERSION=1' \
 	'-DENABLE_PRINTING=1' \
 	'-DENABLE_MANAGED_USERS=1' \
+	'-DVIDEO_HOLE=1' \
 	'-DWEBRTC_RESTRICT_LOGGING' \
 	'-DWEBRTC_MODULE_UTILITY_VIDEO' \
 	'-DWEBRTC_CHROMIUM_BUILD' \