Makes the OfflinePageBridge.getAllPages method asynchronous.

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageUtils.java

 // Copyright 2015 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.offlinepages;
 
 import android.app.Activity;
 import android.content.Context;
 import android.os.Environment;
 
+import org.chromium.base.Callback;
 import org.chromium.base.Log;
 import org.chromium.base.metrics.RecordUserAction;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.snackbar.Snackbar;
 import org.chromium.chrome.browser.snackbar.SnackbarManager;
 import org.chromium.chrome.browser.snackbar.SnackbarManager.SnackbarController;
 import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
 import org.chromium.components.offlinepages.FeatureMode;
@@ skipping 195 matching lines @@
             @Override
             public void onDismissNoAction(Object actionData) {
                 // This method will be called only if the snackbar is dismissed by timeout.
                 RecordUserAction.record(
                         "OfflinePages.SaveStatusSnackbar.FreeUpSpaceButtonNotClicked");
             }
 
             @Override
             public void onAction(Object actionData) {
                 RecordUserAction.record("OfflinePages.SaveStatusSnackbar.FreeUpSpaceButtonClicked");
-                OfflinePageStorageSpacePolicy policy =
-                        new OfflinePageStorageSpacePolicy(offlinePageBridge);
+                Callback<OfflinePageStorageSpacePolicy> callback =
+                        getStorageSpacePolicyCallback(offlinePageBridge, snackbarManager, activity);
+
+                OfflinePageStorageSpacePolicy.create(offlinePageBridge, callback);
+            }
+        };
+    }
+
+    private static Callback<OfflinePageStorageSpacePolicy> getStorageSpacePolicyCallback(
+            final OfflinePageBridge offlinePageBridge, final SnackbarManager snackbarManager,
+            final Activity activity) {
+        return new Callback<OfflinePageStorageSpacePolicy>() {
+            @Override
+            public void onResult(OfflinePageStorageSpacePolicy policy) {
                 if (policy.hasPagesToCleanUp()) {
                     OfflinePageFreeUpSpaceCallback callback = new OfflinePageFreeUpSpaceCallback() {
                         @Override
                         public void onFreeUpSpaceDone() {
                             snackbarManager.showSnackbar(
                                     OfflinePageFreeUpSpaceDialog.createStorageClearedSnackbar(
                                             activity));
                         }
                         @Override
                         public void onFreeUpSpaceCancelled() {}
@@ skipping 30 matching lines @@
                 foundTab.loadUrl(params);
             }
 
             @Override
             public void onDismissNoAction(Object actionData) {
                 RecordUserAction.record("OfflinePages.ReloadButtonNotClicked");
             }
         };
     }
 }