Let Contraints Controll Mute/Unmute Audio Local Playback For Desktop Sharing

third_party/WebKit/Source/platform/exported/WebMediaConstraints.cpp

Index: third_party/WebKit/Source/platform/exported/WebMediaConstraints.cpp
diff --git a/third_party/WebKit/Source/platform/exported/WebMediaConstraints.cpp b/third_party/WebKit/Source/platform/exported/WebMediaConstraints.cpp
index 2ef844e0002bb8293133364d89bd6f71d51cc582..8d06b38a19f197461379c9879ccd51211b5239d8 100644
--- a/third_party/WebKit/Source/platform/exported/WebMediaConstraints.cpp
+++ b/third_party/WebKit/Source/platform/exported/WebMediaConstraints.cpp
@@ -386,6 +386,7 @@ WebMediaTrackConstraintSet::WebMediaTrackConstraintSet()
     , mediaStreamSource("mediaStreamSource")
     , renderToAssociatedSink("chromeRenderToAssociatedSink")
     , hotwordEnabled("hotwordEnabled")
+    , googDisableLocalEcho("googDisableLocalEcho")
     , googEchoCancellation("googEchoCancellation")
     , googExperimentalEchoCancellation("googExperimentalEchoCancellation")
     , googAutoGainControl("googAutoGainControl")
@@ -430,8 +431,8 @@ std::vector<const BaseConstraint*> WebMediaTrackConstraintSet::allConstraints()
     const BaseConstraint* temp[] = {
         &width, &height, &aspectRatio, &frameRate, &facingMode, &volume,
         &sampleRate, &sampleSize, &echoCancellation, &latency, &channelCount,
-        &deviceId, &groupId, &mediaStreamSource, &renderToAssociatedSink,
-        &hotwordEnabled, &googEchoCancellation,
+        &deviceId, &groupId, &mediaStreamSource, &googDisableLocalEcho,
+        &renderToAssociatedSink, &hotwordEnabled, &googEchoCancellation,
         &googExperimentalEchoCancellation, &googAutoGainControl,
         &googExperimentalAutoGainControl, &googNoiseSuppression,
         &googHighpassFilter, &googTypingNoiseDetection,