[Cronet] HistogramManager now ensures that StatisticsRecorder is initialized.

components/cronet/android/histogram_manager.cc

Index: components/cronet/android/histogram_manager.cc
diff --git a/components/cronet/android/histogram_manager.cc b/components/cronet/android/histogram_manager.cc
index 5ad7bb8f4b863415a3d6adc0c12478ea3434ed93..4db69601387a2bfd5cbe18fefeef01c5b544bb98 100644
--- a/components/cronet/android/histogram_manager.cc
+++ b/components/cronet/android/histogram_manager.cc
@@ -8,6 +8,7 @@
 #include <vector>
 
 #include "base/android/jni_array.h"
+#include "base/metrics/statistics_recorder.h"
 #include "components/metrics/histogram_manager.h"
 
 #include "jni/HistogramManager_jni.h"
@@ -19,6 +20,10 @@ bool HistogramManagerRegisterJni(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
+static void EnsureInitialized(JNIEnv* env, jobject jcaller) {
+  base::StatisticsRecorder::Initialize();
+}
+
 static jbyteArray GetHistogramDeltas(JNIEnv* env, jobject jcaller) {
   std::vector<uint8> data;
   if (!metrics::HistogramManager::GetInstance()->GetDeltas(&data))