Fix ExtensionServiceTest.ClearExtensionData flakiness

chrome/browser/browsing_data/browsing_data_remover_unittest.cc

 // Copyright (c) 2012 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/browsing_data/browsing_data_remover.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 143 matching lines @@
   virtual content::DOMStorageContext* GetDOMStorageContext() OVERRIDE {
     return NULL;
   }
   virtual content::IndexedDBContext* GetIndexedDBContext() OVERRIDE {
     return NULL;
   }
   virtual content::ServiceWorkerContext* GetServiceWorkerContext() OVERRIDE {
     return NULL;
   }
 
-  virtual void ClearDataForOrigin(
-      uint32 remove_mask,
-      uint32 quota_storage_remove_mask,
-      const GURL& storage_origin,
-      net::URLRequestContextGetter* rq_context) OVERRIDE {}
+  virtual void ClearDataForOrigin(uint32 remove_mask,
+                                  uint32 quota_storage_remove_mask,
+                                  const GURL& storage_origin,
+                                  net::URLRequestContextGetter* rq_context,
+                                  const base::Closure& callback) OVERRIDE {
+    BrowserThread::PostTask(BrowserThread::UI,
+                            FROM_HERE,
+                            base::Bind(&TestStoragePartition::AsyncRunCallback,
+                                       base::Unretained(this),
+                                       callback));
+  }
 
   virtual void ClearData(uint32 remove_mask,
                          uint32 quota_storage_remove_mask,
                          const GURL& storage_origin,
                          const OriginMatcherFunction& origin_matcher,
                          const base::Time begin,
                          const base::Time end,
                          const base::Closure& callback) OVERRIDE {
     // Store stuff to verify parameters' correctness later.
     storage_partition_removal_data_.remove_mask = remove_mask;
@@ skipping 1571 matching lines @@
   EXPECT_EQ(1u, tester.clear_count());
   EXPECT_EQ(CLEAR_CONTEXTS, tester.last_clear_mode());
 }
 
 TEST_F(BrowsingDataRemoverTest, DomainReliability_NoMonitor) {
   BlockUntilBrowsingDataRemoved(
       BrowsingDataRemover::EVERYTHING,
       BrowsingDataRemover::REMOVE_HISTORY |
       BrowsingDataRemover::REMOVE_COOKIES, false);
 }