Android EglRenderer: Add Bitmap frame listener functionality

webrtc/api/android/java/src/org/webrtc/GlRectDrawer.java

 /*
  *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 package org.webrtc;
 
 import android.opengl.GLES11Ext;
 import android.opengl.GLES20;
-
 import java.nio.FloatBuffer;
 import java.util.IdentityHashMap;
 import java.util.Map;
 
 /**
  * Helper class to draw an opaque quad on the target viewport location. Rotation, mirror, and
  * cropping is specified using a 4x4 texture coordinate transform matrix. The frame input can either
  * be an OES texture or YUV textures in I420 format. The GL state must be preserved between draw
  * calls, this is intentional to maximize performance. The function release() must be called
  * manually to free the resources held by this object.
@@ skipping 176 matching lines @@
    * Release all GLES resources. This needs to be done manually, otherwise the resources are leaked.
    */
   @Override
   public void release() {
     for (Shader shader : shaders.values()) {
       shader.glShader.release();
     }
     shaders.clear();
   }
 }