Move /webrtc/api/android files to /webrtc/sdk/android

I decided to make one webrtc/sdk/android/BUILD.gn for both tests and Java/jni src.

External dependencies needs to be updated after this CL.

Future work is required to clean up the Android api and move
implementation details to /webrtc/sdk/android/src.

BUG=webrtc:5882,webrtc:6804
NOPRESUBMIT=True

Review-Url: https://codereview.webrtc.org/2547483003
Cr-Commit-Position: refs/heads/master@{#15443}

webrtc/sdk/android/api/org/webrtc/Camera1Capturer.java

@@ -0,0 +1,38 @@
+/*
+ *  Copyright 2016 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 org.webrtc.CameraEnumerationAndroid.CaptureFormat;
+
+import android.content.Context;
+
+import java.util.List;
+
+public class Camera1Capturer extends CameraCapturer {
+  private final boolean captureToTexture;
+
+  public Camera1Capturer(
+      String cameraName, CameraEventsHandler eventsHandler, boolean captureToTexture) {
+    super(cameraName, eventsHandler, new Camera1Enumerator(captureToTexture));
+
+    this.captureToTexture = captureToTexture;
+  }
+
+  @Override
+  protected void createCameraSession(CameraSession.CreateSessionCallback createSessionCallback,
+      CameraSession.Events events, Context applicationContext,
+      SurfaceTextureHelper surfaceTextureHelper, String cameraName, int width, int height,
+      int framerate) {
+    Camera1Session.create(createSessionCallback, events, captureToTexture, applicationContext,
+        surfaceTextureHelper, Camera1Enumerator.getCameraIndex(cameraName), width, height,
+        framerate);
+  }
+}