Android: Handle SurfaceTextureHelper ctor failure for decoder and capturer

webrtc/api/java/android/org/webrtc/VideoCapturerAndroid.java

Index: webrtc/api/java/android/org/webrtc/VideoCapturerAndroid.java
diff --git a/webrtc/api/java/android/org/webrtc/VideoCapturerAndroid.java b/webrtc/api/java/android/org/webrtc/VideoCapturerAndroid.java
index e4f2449cb9d70add50eb3dc63f948c833a83f40d..39ed12cfa3d2708c9b0ee74c3724a0d707154ad7 100644
--- a/webrtc/api/java/android/org/webrtc/VideoCapturerAndroid.java
+++ b/webrtc/api/java/android/org/webrtc/VideoCapturerAndroid.java
@@ -369,7 +369,11 @@ public class VideoCapturerAndroid implements
       final CapturerObserver frameObserver) {
     Logging.d(TAG, "startCapture requested: " + width + "x" + height + "@" + framerate);
     if (surfaceTextureHelper == null) {
-      throw new IllegalArgumentException("surfaceTextureHelper not set.");
+      frameObserver.onCapturerStarted(false /* success */);
+      if (eventsHandler != null) {
+        eventsHandler.onCameraError("No SurfaceTexture created.");
+      }
+      return;
     }
     if (applicationContext == null) {
       throw new IllegalArgumentException("applicationContext not set.");