New UMA settings fragment using Android prefs.

chrome/android/java/src/org/chromium/chrome/browser/metrics/UmaSessionStats.java

Index: chrome/android/java/src/org/chromium/chrome/browser/metrics/UmaSessionStats.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/metrics/UmaSessionStats.java b/chrome/android/java/src/org/chromium/chrome/browser/metrics/UmaSessionStats.java
index e3de19bafbc1a31750bf2c62603582c5c2c929b4..b5e8134cbf9174e0a290fd51a3a63b3acc12c6fe 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/metrics/UmaSessionStats.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/metrics/UmaSessionStats.java
@@ -8,15 +8,18 @@ import android.app.Activity;
 import android.content.ComponentCallbacks;
 import android.content.Context;
 import android.content.res.Configuration;
+import android.text.TextUtils;
 
 import org.chromium.base.ActivityState;
 import org.chromium.base.ApplicationStatus;
 import org.chromium.chrome.browser.Tab;
+import org.chromium.chrome.browser.preferences.PrefServiceBridge;
 import org.chromium.chrome.browser.preferences.privacy.CrashReportingPermissionManager;
 import org.chromium.chrome.browser.preferences.privacy.PrivacyPreferencesManager;
 import org.chromium.chrome.browser.tabmodel.TabModel;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
 import org.chromium.chrome.browser.tabmodel.TabModelSelectorTabObserver;
+import org.chromium.components.variations.VariationsAssociatedData;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.net.NetworkChangeNotifier;
 
@@ -102,6 +105,7 @@ public class UmaSessionStats implements NetworkChangeNotifier.ConnectionTypeObse
 
         nativeUmaResumeSession(sNativeUmaSessionStats);
         NetworkChangeNotifier.addConnectionTypeObserver(this);
+        updatePreferences();
         updateMetricsServiceState();
     }
 
@@ -159,6 +163,32 @@ public class UmaSessionStats implements NetworkChangeNotifier.ConnectionTypeObse
         nativeUpdateMetricsServiceState(mayRecordStats, mayUploadStats);
     }
 
+    /**
+     * Updating Android preferences according to equivalent native preferences so that the values
+     * can be retrieved while native preferences are not accessible.
+     */
+    private void updatePreferences() {
+        // Update cellular experiment preference.
+        PrivacyPreferencesManager prefManager = PrivacyPreferencesManager.getInstance(mContext);
+        boolean cellularExperiment = TextUtils.equals("true",
+                VariationsAssociatedData.getVariationParamValue(
+                        "UMA_EnableCellularLogUpload", "Enabled"));
+        prefManager.setCellularExperiment(cellularExperiment);
+
+        // Update metrics reporting preference.
+        if (cellularExperiment) {
+            PrefServiceBridge prefBridge = PrefServiceBridge.getInstance();
+            // If the native preference metrics reporting has not been set, then initialize it
+            // based on the older android preference.
+            if (!prefBridge.hasSetMetricsReporting()) {
+                prefBridge.setMetricsReportingEnabled(prefManager.isUploadCrashDumpEnabled());
+            }
+
+            // Set new Android preference for usage and crash reporting.
+            prefManager.setUsageAndCrashReporting(prefBridge.isMetricsReportingEnabled());
+        }
+    }
+
     @Override
     public void onConnectionTypeChanged(int connectionType) {
         updateMetricsServiceState();