Ensure promo dialogs are dismissed when activities are destroyed.

chrome/android/java/src/org/chromium/chrome/browser/locale/SogouPromoDialog.java

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.locale;
 
-import android.content.Context;
+import android.app.Activity;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.annotation.IntDef;
 import android.support.annotation.Nullable;
 import android.text.SpannableString;
 import android.text.method.LinkMovementMethod;
 import android.text.style.ClickableSpan;
 import android.text.style.StyleSpan;
 import android.view.View;
@@ skipping 43 matching lines @@
             dismiss();
         }
     };
 
     @UserChoice
     private int mChoice = CHOICE_BACK_KEY;
 
     /**
      * Creates an instance of the dialog.
      */
-    public SogouPromoDialog(
-            Context context, LocaleManager localeManager, @Nullable Callback<Boolean> onDismissed) {
-        super(context);
+    public SogouPromoDialog(Activity activity, LocaleManager localeManager,
+            @Nullable Callback<Boolean> onDismissed) {
+        super(activity);
         mLocaleManager = localeManager;
         setOnDismissListener(this);
         setCanceledOnTouchOutside(false);
         mOnDismissedCallback = onDismissed;
     }
 
     @Override
     protected DialogParams getDialogParams() {
         PromoDialog.DialogParams params = new PromoDialog.DialogParams();
         params.vectorDrawableResource = R.drawable.search_sogou;
@@ skipping 63 matching lines @@
         ContextUtils.getAppSharedPreferences()
                 .edit()
                 .putBoolean(LocaleManager.PREF_PROMO_SHOWN, true)
                 .apply();
         RecordHistogram.recordEnumeratedHistogram(
                 "SpecialLocale.PromotionDialog", mChoice, CHOICE_ENUM_COUNT);
 
         if (mOnDismissedCallback != null) mOnDismissedCallback.onResult(true);
     }
 }