Fix fullscreen scaling in AppRTCMobile.

webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java

Index: webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java
diff --git a/webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java b/webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java
index 67b41fa9f9a6f42b13ad5f5fcbfe25fbf5fb7711..06d72425a84bec41f0ba11fc42835018ca58047c 100644
--- a/webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java
+++ b/webrtc/sdk/android/api/org/webrtc/SurfaceViewRenderer.java
@@ -164,12 +164,14 @@ public class SurfaceViewRenderer
   public void setScalingType(RendererCommon.ScalingType scalingType) {
     ThreadUtils.checkIsOnMainThread();
     videoLayoutMeasure.setScalingType(scalingType);
+    requestLayout();
   }
 
   public void setScalingType(RendererCommon.ScalingType scalingTypeMatchOrientation,
       RendererCommon.ScalingType scalingTypeMismatchOrientation) {
     ThreadUtils.checkIsOnMainThread();
     videoLayoutMeasure.setScalingType(scalingTypeMatchOrientation, scalingTypeMismatchOrientation);
+    requestLayout();
   }
 
   /**