Revert of Combine webrtc/api/java/android and webrtc/api/java/src.

webrtc/api/android/jni/androidmetrics_jni.cc

-/*
- *  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.
- */
-
-#include <map>
-#include <memory>
-
-#include "webrtc/api/android/jni/classreferenceholder.h"
-#include "webrtc/api/android/jni/jni_helpers.h"
-#include "webrtc/api/android/jni/native_handle_impl.h"
-#include "webrtc/system_wrappers/include/metrics_default.h"
-
-// Enables collection of native histograms.
-namespace webrtc_jni {
-JOW(void, Metrics_nativeEnable)(JNIEnv* jni, jclass) {
-  webrtc::metrics::Enable();
-}
-
-// Gets and clears native histograms.
-JOW(jobject, Metrics_nativeGetAndReset)(JNIEnv* jni, jclass) {
-  jclass j_metrics_class = FindClass(jni, "org/webrtc/Metrics");
-  jmethodID j_add =
-      GetMethodID(jni, j_metrics_class, "add",
-                  "(Ljava/lang/String;Lorg/webrtc/Metrics$HistogramInfo;)V");
-  jclass j_info_class = FindClass(jni, "org/webrtc/Metrics$HistogramInfo");
-  jmethodID j_add_sample = GetMethodID(jni, j_info_class, "addSample", "(II)V");
-
-  // Create |Metrics|.
-  jobject j_metrics = jni->NewObject(
-      j_metrics_class, GetMethodID(jni, j_metrics_class, "<init>", "()V"));
-
-  std::map<std::string, std::unique_ptr<webrtc::metrics::SampleInfo>>
-      histograms;
-  webrtc::metrics::GetAndReset(&histograms);
-  for (const auto& kv : histograms) {
-    // Create and add samples to |HistogramInfo|.
-    jobject j_info = jni->NewObject(
-        j_info_class, GetMethodID(jni, j_info_class, "<init>", "(III)V"),
-        kv.second->min, kv.second->max,
-        static_cast<int>(kv.second->bucket_count));
-    for (const auto& sample : kv.second->samples) {
-      jni->CallVoidMethod(j_info, j_add_sample, sample.first, sample.second);
-    }
-    // Add |HistogramInfo| to |Metrics|.
-    jstring j_name = jni->NewStringUTF(kv.first.c_str());
-    jni->CallVoidMethod(j_metrics, j_add, j_name, j_info);
-    jni->DeleteLocalRef(j_name);
-    jni->DeleteLocalRef(j_info);
-  }
-  CHECK_EXCEPTION(jni);
-  return j_metrics;
-}
-}  // namespace webrtc_jni