Revert of Break peerconnection_jni.cc into multiple files, in "pc" directory.

webrtc/sdk/android/src/jni/pc/datachannelobserver_jni.cc

Index: webrtc/sdk/android/src/jni/pc/datachannelobserver_jni.cc
diff --git a/webrtc/sdk/android/src/jni/pc/datachannelobserver_jni.cc b/webrtc/sdk/android/src/jni/pc/datachannelobserver_jni.cc
deleted file mode 100644
index 971c300061100d8062890cdf4cec13dbbb9d0fcb..0000000000000000000000000000000000000000
--- a/webrtc/sdk/android/src/jni/pc/datachannelobserver_jni.cc
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- *  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.
- */
-
-#include "webrtc/sdk/android/src/jni/pc/datachannelobserver_jni.h"
-
-#include "webrtc/sdk/android/src/jni/classreferenceholder.h"
-
-namespace webrtc_jni {
-
-// Convenience, used since callbacks occur on the signaling thread, which may
-// be a non-Java thread.
-static JNIEnv* jni() {
-  return AttachCurrentThreadIfNeeded();
-}
-
-DataChannelObserverJni::DataChannelObserverJni(JNIEnv* jni, jobject j_observer)
-    : j_observer_global_(jni, j_observer),
-      j_observer_class_(jni, GetObjectClass(jni, j_observer)),
-      j_buffer_class_(jni, FindClass(jni, "org/webrtc/DataChannel$Buffer")),
-      j_on_buffered_amount_change_mid_(GetMethodID(jni,
-                                                   *j_observer_class_,
-                                                   "onBufferedAmountChange",
-                                                   "(J)V")),
-      j_on_state_change_mid_(
-          GetMethodID(jni, *j_observer_class_, "onStateChange", "()V")),
-      j_on_message_mid_(GetMethodID(jni,
-                                    *j_observer_class_,
-                                    "onMessage",
-                                    "(Lorg/webrtc/DataChannel$Buffer;)V")),
-      j_buffer_ctor_(GetMethodID(jni,
-                                 *j_buffer_class_,
-                                 "<init>",
-                                 "(Ljava/nio/ByteBuffer;Z)V")) {}
-
-void DataChannelObserverJni::OnBufferedAmountChange(uint64_t previous_amount) {
-  ScopedLocalRefFrame local_ref_frame(jni());
-  jni()->CallVoidMethod(*j_observer_global_, j_on_buffered_amount_change_mid_,
-                        previous_amount);
-  CHECK_EXCEPTION(jni()) << "error during CallVoidMethod";
-}
-
-void DataChannelObserverJni::OnStateChange() {
-  ScopedLocalRefFrame local_ref_frame(jni());
-  jni()->CallVoidMethod(*j_observer_global_, j_on_state_change_mid_);
-  CHECK_EXCEPTION(jni()) << "error during CallVoidMethod";
-}
-
-void DataChannelObserverJni::OnMessage(const webrtc::DataBuffer& buffer) {
-  ScopedLocalRefFrame local_ref_frame(jni());
-  jobject byte_buffer = jni()->NewDirectByteBuffer(
-      const_cast<char*>(buffer.data.data<char>()), buffer.data.size());
-  jobject j_buffer = jni()->NewObject(*j_buffer_class_, j_buffer_ctor_,
-                                      byte_buffer, buffer.binary);
-  jni()->CallVoidMethod(*j_observer_global_, j_on_message_mid_, j_buffer);
-  CHECK_EXCEPTION(jni()) << "error during CallVoidMethod";
-}
-
-}  // namespace webrtc_jni