Add a time period dropdown to the CBD dialog on Android.

chrome/browser/android/preferences/pref_service_bridge.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/android/preferences/pref_service_bridge.h"
 
 #include <jni.h>
 #include <stddef.h>
 #include <vector>
 
@@ skipping 521 matching lines @@
 
   std::string pref;
   if (!GetDeletionPreferenceFromDataType(
       static_cast<BrowsingDataType>(data_type), &pref)) {
     return;
   }
 
   GetOriginalProfile()->GetPrefs()->SetBoolean(pref, value);
 }
 
+static jint GetBrowsingDataDeletionTimePeriod(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj) {
+  return GetPrefService()->GetInteger(prefs::kDeleteTimePeriod);
+}
+
+static void SetBrowsingDataDeletionTimePeriod(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj,
+    jint time_period) {
+  DCHECK_GE(time_period, 0);
+  DCHECK_LE(time_period, BrowsingDataRemover::TIME_PERIOD_LAST);
+  GetPrefService()->SetInteger(prefs::kDeleteTimePeriod, time_period);
+}
+
 static void ClearBrowsingData(JNIEnv* env,
                               const JavaParamRef<jobject>& obj,
                               const JavaParamRef<jintArray>& data_types) {
   BrowsingDataRemover* browsing_data_remover =
       BrowsingDataRemoverFactory::GetForBrowserContext(GetOriginalProfile());
   // ClearBrowsingDataObserver deletes itself when |browsing_data_remover| is
   // done.
   new ClearBrowsingDataObserver(env, obj, browsing_data_remover);
 
   std::vector<int> data_types_vector;
@@ skipping 463 matching lines @@
 
   return ConvertJavaStringToUTF8(android_permission);
 }
 
 static void SetSupervisedUserId(JNIEnv* env,
                                 const JavaParamRef<jobject>& obj,
                                 const JavaParamRef<jstring>& pref) {
   GetPrefService()->SetString(prefs::kSupervisedUserId,
                               ConvertJavaStringToUTF8(env, pref));
 }