Move AndroidVideoTrackSourceObserver from API to src

webrtc/sdk/android/src/java/org/webrtc/AndroidVideoTrackSourceObserver.java

Index: webrtc/sdk/android/src/java/org/webrtc/AndroidVideoTrackSourceObserver.java
diff --git a/webrtc/sdk/android/src/java/org/webrtc/AndroidVideoTrackSourceObserver.java b/webrtc/sdk/android/src/java/org/webrtc/AndroidVideoTrackSourceObserver.java
new file mode 100644
index 0000000000000000000000000000000000000000..323bd5be2ad43fcb82d947db0c4e3e0a2dc460e3
--- /dev/null
+++ b/webrtc/sdk/android/src/java/org/webrtc/AndroidVideoTrackSourceObserver.java
@@ -0,0 +1,52 @@
+/*
+ *  Copyright 2017 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;
+
+/** An implementation of CapturerObserver that forwards all calls from Java to the C layer. */
+class AndroidVideoTrackSourceObserver implements VideoCapturer.CapturerObserver {
+  // Pointer to VideoTrackSourceProxy proxying AndroidVideoTrackSource.
+  private final long nativeSource;
+
+  public AndroidVideoTrackSourceObserver(long nativeSource) {
+    this.nativeSource = nativeSource;
+  }
+
+  @Override
+  public void onCapturerStarted(boolean success) {
+    nativeCapturerStarted(nativeSource, success);
+  }
+
+  @Override
+  public void onCapturerStopped() {
+    nativeCapturerStopped(nativeSource);
+  }
+
+  @Override
+  public void onByteBufferFrameCaptured(
+      byte[] data, int width, int height, int rotation, long timeStamp) {
+    nativeOnByteBufferFrameCaptured(
+        nativeSource, data, data.length, width, height, rotation, timeStamp);
+  }
+
+  @Override
+  public void onTextureFrameCaptured(int width, int height, int oesTextureId,
+      float[] transformMatrix, int rotation, long timestamp) {
+    nativeOnTextureFrameCaptured(
+        nativeSource, width, height, oesTextureId, transformMatrix, rotation, timestamp);
+  }
+
+  private native void nativeCapturerStarted(long nativeSource, boolean success);
+  private native void nativeCapturerStopped(long nativeSource);
+  private native void nativeOnByteBufferFrameCaptured(long nativeSource, byte[] data, int length,
+      int width, int height, int rotation, long timeStamp);
+  private native void nativeOnTextureFrameCaptured(long nativeSource, int width, int height,
+      int oesTextureId, float[] transformMatrix, int rotation, long timestamp);
+}