Expose registered histograms from FeedbackCollector

base/android/statistics_recorder_android.cc

Index: base/android/statistics_recorder_android.cc
diff --git a/base/android/statistics_recorder_android.cc b/base/android/statistics_recorder_android.cc
new file mode 100644
index 0000000000000000000000000000000000000000..278fad8c16d7e2edbfcbb0c3d53ef25ed0d1921a
--- /dev/null
+++ b/base/android/statistics_recorder_android.cc
@@ -0,0 +1,30 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/android/statistics_recorder_android.h"
+
+#include <string>
+
+#include "base/android/jni_string.h"
+#include "base/metrics/statistics_recorder.h"
+#include "jni/StatisticsRecorderAndroid_jni.h"
+
+using base::android::JavaParamRef;
+using base::android::ConvertUTF8ToJavaString;
+
+namespace base {
+namespace android {
+
+static ScopedJavaLocalRef<jstring> ToJson(JNIEnv* env,
+                                          const JavaParamRef<jclass>& clazz) {
+  return ConvertUTF8ToJavaString(
+      env, base::StatisticsRecorder::ToJSON(std::string()));
+}
+
+bool RegisterStatisticsRecorderAndroid(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace android
+}  // namespace base