Revert "Allow to print Java stack traces in Android camera, renderer and media codec."

talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java

Index: talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java
diff --git a/talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java b/talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java
index c1fff94ed69eb3d51b1816e606f10b465ae3480f..91de8110b0e99b2f686aa18eec3128dd9f123c43 100644
--- a/talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java
+++ b/talk/app/webrtc/java/src/org/webrtc/MediaCodecVideoDecoder.java
@@ -32,6 +32,9 @@ import android.media.MediaCodecInfo;
 import android.media.MediaCodecInfo.CodecCapabilities;
 import android.media.MediaCodecList;
 import android.media.MediaFormat;
+import android.opengl.EGLContext;
+import android.opengl.GLES11Ext;
+import android.opengl.GLES20;
 import android.os.Build;
 import android.view.Surface;
 
@@ -62,7 +65,7 @@ public class MediaCodecVideoDecoder {
   }
 
   private static final int DEQUEUE_INPUT_TIMEOUT = 500000;  // 500 ms timeout.
-  private static Thread mediaCodecThread;
+  private Thread mediaCodecThread;
   private MediaCodec mediaCodec;
   private ByteBuffer[] inputBuffers;
   private ByteBuffer[] outputBuffers;
@@ -172,18 +175,6 @@ public class MediaCodecVideoDecoder {
     return findDecoder(H264_MIME_TYPE, supportedH264HwCodecPrefixes) != null;
   }
 
-  public static void printStackTrace() {
-    if (mediaCodecThread != null) {
-      StackTraceElement[] mediaCodecStackTraces = mediaCodecThread.getStackTrace();
-      if (mediaCodecStackTraces.length > 0) {
-        Logging.d(TAG, "MediaCodecVideoDecoder stacks trace:");
-        for (StackTraceElement stackTrace : mediaCodecStackTraces) {
-          Logging.d(TAG, stackTrace.toString());
-        }
-      }
-    }
-  }
-
   private void checkOnMediaCodecThread() throws IllegalStateException {
     if (mediaCodecThread.getId() != Thread.currentThread().getId()) {
       throw new IllegalStateException(