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

webrtc/sdk/android/src/jni/rtcstatscollectorcallbackwrapper.h

+/*
+ *  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.
+ */
+
+#ifndef WEBRTC_SDK_ANDROID_SRC_JNI_RTCSTATSCOLLECTORCALLBACKWRAPPER_H_
+#define WEBRTC_SDK_ANDROID_SRC_JNI_RTCSTATSCOLLECTORCALLBACKWRAPPER_H_
+
+#include <jni.h>
+
+#include "webrtc/api/peerconnectioninterface.h"
+#include "webrtc/sdk/android/src/jni/jni_helpers.h"
+
+namespace webrtc_jni {
+
+// Adapter for a Java RTCStatsCollectorCallback presenting a C++
+// RTCStatsCollectorCallback and dispatching the callback from C++ back to
+// Java.
+class RTCStatsCollectorCallbackWrapper
+    : public webrtc::RTCStatsCollectorCallback {
+ public:
+  RTCStatsCollectorCallbackWrapper(JNIEnv* jni, jobject j_callback);
+
+  void OnStatsDelivered(
+      const rtc::scoped_refptr<const webrtc::RTCStatsReport>& report) override;
+
+ private:
+  // Helper functions for converting C++ RTCStatsReport to Java equivalent.
+  jobject ReportToJava(
+      JNIEnv* jni,
+      const rtc::scoped_refptr<const webrtc::RTCStatsReport>& report);
+  jobject StatsToJava(JNIEnv* jni, const webrtc::RTCStats& stats);
+  jobject MemberToJava(JNIEnv* jni,
+                       const webrtc::RTCStatsMemberInterface* member);
+
+  const ScopedGlobalRef<jobject> j_callback_global_;
+  const ScopedGlobalRef<jclass> j_callback_class_;
+  const jclass j_stats_report_class_;
+  const jmethodID j_stats_report_ctor_;
+  const jclass j_stats_class_;
+  const jmethodID j_stats_ctor_;
+  const jclass j_linked_hash_map_class_;
+  const jmethodID j_linked_hash_map_ctor_;
+  const jmethodID j_linked_hash_map_put_;
+  const jclass j_boolean_class_;
+  const jmethodID j_boolean_ctor_;
+  const jclass j_integer_class_;
+  const jmethodID j_integer_ctor_;
+  const jclass j_long_class_;
+  const jmethodID j_long_ctor_;
+  const jclass j_big_integer_class_;
+  const jmethodID j_big_integer_ctor_;
+  const jclass j_double_class_;
+  const jmethodID j_double_ctor_;
+  const jclass j_string_class_;
+};
+
+}  // namespace webrtc_jni
+
+#endif  // WEBRTC_SDK_ANDROID_SRC_JNI_RTCSTATSCOLLECTORCALLBACKWRAPPER_H_