Implement delete methods for the various CannedBrowsingDataHelpers.

chrome/browser/browsing_data/browsing_data_database_helper_unittest.cc

Index: chrome/browser/browsing_data/browsing_data_database_helper_unittest.cc
diff --git a/chrome/browser/browsing_data/browsing_data_database_helper_unittest.cc b/chrome/browser/browsing_data/browsing_data_database_helper_unittest.cc
index 276cb89debbe716d3084e5b78e59cb1378af4a13..0663ee05f1cd80c796f83d4f58baacd2edf4afc0 100644
--- a/chrome/browser/browsing_data/browsing_data_database_helper_unittest.cc
+++ b/chrome/browser/browsing_data/browsing_data_database_helper_unittest.cc
@@ -7,9 +7,12 @@
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/common/database/database_identifier.h"
 
 namespace {
 
+using webkit_database::DatabaseIdentifier;
+
 class CannedBrowsingDataDatabaseHelperTest : public testing::Test {
   content::TestBrowserThreadBundle thread_bundle_;
 };
@@ -30,6 +33,34 @@ TEST_F(CannedBrowsingDataDatabaseHelperTest, Empty) {
   ASSERT_TRUE(helper->empty());
 }
 
+TEST_F(CannedBrowsingDataDatabaseHelperTest, Delete) {
+  TestingProfile profile;
+
+  const GURL origin1("http://host1:9000");
+  const char db1[] = "db1";
+
+  const GURL origin2("http://example.com");
+  const char db2[] = "db2";
+
+  const GURL origin3("http://foo.example.com");
+  const char db3[] = "db3";
+
+  scoped_refptr<CannedBrowsingDataDatabaseHelper> helper(
+      new CannedBrowsingDataDatabaseHelper(&profile));
+
+  EXPECT_TRUE(helper->empty());
+  helper->AddDatabase(origin1, db1, std::string());
+  helper->AddDatabase(origin2, db2, std::string());
+  helper->AddDatabase(origin3, db3, std::string());
+  EXPECT_EQ(3u, helper->GetDatabaseCount());
+  helper->DeleteDatabase(
+      DatabaseIdentifier::CreateFromOrigin(origin2).ToString(), db1);
+  EXPECT_EQ(3u, helper->GetDatabaseCount());
+  helper->DeleteDatabase(
+      DatabaseIdentifier::CreateFromOrigin(origin2).ToString(), db2);
+  EXPECT_EQ(2u, helper->GetDatabaseCount());
+}
+
 TEST_F(CannedBrowsingDataDatabaseHelperTest, IgnoreExtensionsAndDevTools) {
   TestingProfile profile;