Enabling sampling of UMA and crash reports on Android.

chrome/browser/android/metrics/uma_utils.cc

Index: chrome/browser/android/metrics/uma_utils.cc
diff --git a/chrome/browser/android/metrics/uma_utils.cc b/chrome/browser/android/metrics/uma_utils.cc
index fe103181b93701cb14653282fb429161895a249c..f0d1c2d5e58d5e7688b681e3142d1b5fe32606b7 100644
--- a/chrome/browser/android/metrics/uma_utils.cc
+++ b/chrome/browser/android/metrics/uma_utils.cc
@@ -7,6 +7,7 @@
 #include <stdint.h>
 
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/metrics/chrome_metrics_services_manager_client.h"
 #include "components/metrics/metrics_reporting_default_state.h"
 #include "jni/UmaUtils_jni.h"
 
@@ -24,6 +25,12 @@ base::Time GetMainEntryPointTime() {
          base::TimeDelta::FromMilliseconds(startTimeUnixMs);
 }
 
+static jboolean IsClientInMetricsReportingSample(
+    JNIEnv* env,
+    const JavaParamRef<jclass>& obj) {
+  return ChromeMetricsServicesManagerClient::IsClientInSample();
+}
+
 static void RecordMetricsReportingDefaultOptIn(JNIEnv* env,
                                                const JavaParamRef<jclass>& obj,
                                                jboolean opt_in) {