Revert of Combine webrtc/api/java/android and webrtc/api/java/src. (patchset #1 id:1 of https://codereview.webrtc.org/2111823002/ )

Reason for revert:
Breaks downstream dependencies

Original issue's description:
> Combine webrtc/api/java/android and webrtc/api/java/src.
>
> It used to be that there was a Java api for devices not running Android
> but that is no longer the case. I combined the directories and made
> the folder structure chromium style.
>
> BUG=webrtc:6067
> R=magjed@webrtc.org, tommi@webrtc.org
>
> Committed: https://chromium.googlesource.com/external/webrtc/+/ceefe20dd65387d83059d9fc1ce84842650ed5e2

TBR=magjed@webrtc.org,tommi@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6067

Review URL: https://codereview.webrtc.org/2106333005 .

Cr-Commit-Position: refs/heads/master@{#13357}
diff --git a/webrtc/api/java/jni/androidmediadecoder_jni.h b/webrtc/api/java/jni/androidmediadecoder_jni.h
new file mode 100644
index 0000000..0719926
--- /dev/null
+++ b/webrtc/api/java/jni/androidmediadecoder_jni.h
@@ -0,0 +1,41 @@
+/*
+ *  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.
+ */
+
+#ifndef WEBRTC_API_JAVA_JNI_ANDROIDMEDIADECODER_JNI_H_
+#define WEBRTC_API_JAVA_JNI_ANDROIDMEDIADECODER_JNI_H_
+
+#include "webrtc/api/java/jni/jni_helpers.h"
+#include "webrtc/media/engine/webrtcvideodecoderfactory.h"
+
+namespace webrtc_jni {
+
+// Implementation of Android MediaCodec based decoder factory.
+class MediaCodecVideoDecoderFactory
+    : public cricket::WebRtcVideoDecoderFactory {
+ public:
+  MediaCodecVideoDecoderFactory();
+  virtual ~MediaCodecVideoDecoderFactory();
+
+  void SetEGLContext(JNIEnv* jni, jobject render_egl_context);
+
+  // WebRtcVideoDecoderFactory implementation.
+  webrtc::VideoDecoder* CreateVideoDecoder(webrtc::VideoCodecType type)
+      override;
+
+  void DestroyVideoDecoder(webrtc::VideoDecoder* decoder) override;
+
+ private:
+  jobject egl_context_;
+  std::vector<webrtc::VideoCodecType> supported_codec_types_;
+};
+
+}  // namespace webrtc_jni
+
+#endif  // WEBRTC_API_JAVA_JNI_ANDROIDMEDIADECODER_JNI_H_