Implement delete methods for the various CannedBrowsingDataHelpers.

chrome/browser/browsing_data/browsing_data_local_storage_helper_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_local_storage_helper.h"
 
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 11 matching lines @@
   scoped_refptr<CannedBrowsingDataLocalStorageHelper> helper(
       new CannedBrowsingDataLocalStorageHelper(&profile));
 
   ASSERT_TRUE(helper->empty());
   helper->AddLocalStorage(origin);
   ASSERT_FALSE(helper->empty());
   helper->Reset();
   ASSERT_TRUE(helper->empty());
 }
 
+TEST_F(CannedBrowsingDataLocalStorageTest, Delete) {
+  TestingProfile profile;
+
+  const GURL origin1("http://host1:9000");
+  const GURL origin2("http://example.com");
+  const GURL origin3("http://foo.example.com");
+
+  scoped_refptr<CannedBrowsingDataLocalStorageHelper> helper(
+      new CannedBrowsingDataLocalStorageHelper(&profile));
+
+  EXPECT_TRUE(helper->empty());
+  helper->AddLocalStorage(origin1);
+  helper->AddLocalStorage(origin2);
+  helper->AddLocalStorage(origin3);
+  EXPECT_EQ(3u, helper->GetLocalStorageCount());
+  helper->DeleteOrigin(origin2);
+  EXPECT_EQ(2u, helper->GetLocalStorageCount());
+  helper->DeleteOrigin(origin1);
+  EXPECT_EQ(1u, helper->GetLocalStorageCount());
+}
+
 TEST_F(CannedBrowsingDataLocalStorageTest, IgnoreExtensionsAndDevTools) {
   TestingProfile profile;
 
   const GURL origin1("chrome-extension://abcdefghijklmnopqrstuvwxyz/");
   const GURL origin2("chrome-devtools://abcdefghijklmnopqrstuvwxyz/");
 
   scoped_refptr<CannedBrowsingDataLocalStorageHelper> helper(
       new CannedBrowsingDataLocalStorageHelper(&profile));
 
   ASSERT_TRUE(helper->empty());
   helper->AddLocalStorage(origin1);
   ASSERT_TRUE(helper->empty());
   helper->AddLocalStorage(origin2);
   ASSERT_TRUE(helper->empty());
 }
 
 }  // namespace