Allow custom metrics implementations on Android.

webrtc/api/android/jni/androidmetrics_jni.cc

Index: webrtc/api/android/jni/androidmetrics_jni.cc
diff --git a/webrtc/api/android/jni/androidmetrics_jni.cc b/webrtc/api/android/jni/androidmetrics_jni.cc
index 68b0b73bbef85db9a07bb2709bf85c1530a8e5ff..51c38ac1da46e31da43ac01985655fe77051d8cf 100644
--- a/webrtc/api/android/jni/androidmetrics_jni.cc
+++ b/webrtc/api/android/jni/androidmetrics_jni.cc
@@ -59,19 +59,4 @@ JOW(jobject, Metrics_nativeGetAndReset)(JNIEnv* jni, jclass) {
   return j_metrics;
 }
 
-JOW(jlong, Metrics_00024Histogram_nativeCreateCounts)
-(JNIEnv* jni, jclass, jstring j_name, jint min, jint max, jint buckets) {
-  std::string name = JavaToStdString(jni, j_name);
-  return jlongFromPointer(
-      webrtc::metrics::HistogramFactoryGetCounts(name, min, max, buckets));
-}
-
-JOW(void, Metrics_00024Histogram_nativeAddSample)
-(JNIEnv* jni, jclass, jlong histogram, jint sample) {
-  if (histogram) {
-    HistogramAdd(reinterpret_cast<webrtc::metrics::Histogram*>(histogram),
-                 sample);
-  }
-}
-
 }  // namespace webrtc_jni