🍰 Migrate app shared preferences to ContextUtils.

chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/OtherFormsOfHistoryDialogFragment.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/OtherFormsOfHistoryDialogFragment.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/OtherFormsOfHistoryDialogFragment.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/OtherFormsOfHistoryDialogFragment.java
index e0d3a4fcc71cf4f981c33063159ac969c075e2c0..adf2f74ee597f7a8f1c0f011709e82df299d496c 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/OtherFormsOfHistoryDialogFragment.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/privacy/OtherFormsOfHistoryDialogFragment.java
@@ -11,7 +11,6 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.SharedPreferences;
 import android.os.Bundle;
-import android.preference.PreferenceManager;
 import android.support.v7.app.AlertDialog;
 import android.text.SpannableString;
 import android.text.method.LinkMovementMethod;
@@ -19,6 +18,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.TextView;
 
+import org.chromium.base.ContextUtils;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
@@ -107,7 +107,7 @@ public class OtherFormsOfHistoryDialogFragment extends DialogFragment implements
      */
     private static void recordDialogWasShown(Activity activity, boolean shown) {
         SharedPreferences preferences =
-                PreferenceManager.getDefaultSharedPreferences(activity);
+                ContextUtils.getAppSharedPreferences();
         SharedPreferences.Editor editor = preferences.edit();
         editor.putBoolean(PREF_OTHER_FORMS_OF_HISTORY_DIALOG_SHOWN, shown);
         editor.apply();
@@ -117,7 +117,7 @@ public class OtherFormsOfHistoryDialogFragment extends DialogFragment implements
      * @return Whether the dialog has already been shown to the user before.
      */
     static boolean wasDialogShown(Context context) {
-        return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
+        return ContextUtils.getAppSharedPreferences().getBoolean(
                 PREF_OTHER_FORMS_OF_HISTORY_DIALOG_SHOWN, false);
     }