Changes favicon database to support storing bitmaps of different sizes for the same icon_url

chrome/browser/history/thumbnail_database_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 <algorithm>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
@@ skipping 103 matching lines @@
   ThumbnailDatabase db;
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   GURL url("http://google.com");
   FaviconID id = db.AddFavicon(url, FAVICON);
   base::Time time = base::Time::Now();
-  db.SetFavicon(id, favicon, time);
+  db.AddFaviconFrame(id, favicon, time);
   EXPECT_TRUE(db.RenameAndDropThumbnails(file_name_, new_file_name_));
   EXPECT_TRUE(db.IsLatestVersion());
 
   base::Time time_out;
   std::vector<unsigned char> favicon_out;
   GURL url_out;
   IconType icon_type_out;
   EXPECT_TRUE(db.GetFavicon(id, &time_out, &favicon_out, &url_out,
                             &icon_type_out));
   EXPECT_EQ(url, url_out);
@@ skipping 10 matching lines @@
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   GURL url("http://google.com");
   FaviconID id = db.AddFavicon(url, TOUCH_ICON);
   EXPECT_NE(0, id);
   base::Time time = base::Time::Now();
-  db.SetFavicon(id, favicon, time);
+  db.AddFaviconFrame(id, favicon, time);
 
   EXPECT_NE(0, db.AddIconMapping(url, id));
   std::vector<IconMapping> icon_mapping;
   EXPECT_TRUE(db.GetIconMappingsForPageURL(url, &icon_mapping));
   EXPECT_EQ(1u, icon_mapping.size());
   EXPECT_EQ(url, icon_mapping.front().page_url);
   EXPECT_EQ(id, icon_mapping.front().icon_id);
 }
 
 TEST_F(ThumbnailDatabaseTest, UpdateIconMapping) {
   ThumbnailDatabase db;
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   GURL url("http://google.com");
   FaviconID id = db.AddFavicon(url, TOUCH_ICON);
   base::Time time = base::Time::Now();
-  db.SetFavicon(id, favicon, time);
+  db.AddFaviconFrame(id, favicon, time);
 
   EXPECT_TRUE(0 < db.AddIconMapping(url, id));
   std::vector<IconMapping> icon_mapping;
   EXPECT_TRUE(db.GetIconMappingsForPageURL(url, &icon_mapping));
   ASSERT_EQ(1u, icon_mapping.size());
   EXPECT_EQ(url, icon_mapping.front().page_url);
   EXPECT_EQ(id, icon_mapping.front().icon_id);
 
   GURL url1("http://www.google.com/");
   FaviconID new_id = db.AddFavicon(url1, TOUCH_ICON);
@@ skipping 11 matching lines @@
   ThumbnailDatabase db;
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   GURL url("http://google.com");
   FaviconID id = db.AddFavicon(url, TOUCH_ICON);
   base::Time time = base::Time::Now();
-  db.SetFavicon(id, favicon, time);
+  db.AddFaviconFrame(id, favicon, time);
   EXPECT_TRUE(0 < db.AddIconMapping(url, id));
 
   FaviconID id2 = db.AddFavicon(url, FAVICON);
-  db.SetFavicon(id2, favicon, time);
+  db.AddFaviconFrame(id2, favicon, time);
   EXPECT_TRUE(0 < db.AddIconMapping(url, id2));
   ASSERT_NE(id, id2);
 
   std::vector<IconMapping> icon_mapping;
   EXPECT_TRUE(db.GetIconMappingsForPageURL(url, &icon_mapping));
   ASSERT_EQ(2u, icon_mapping.size());
   EXPECT_EQ(icon_mapping.front().icon_type, TOUCH_ICON);
   EXPECT_TRUE(db.GetIconMappingForPageURL(url, FAVICON, NULL));
 
   db.DeleteIconMappings(url);
 
   EXPECT_FALSE(db.GetIconMappingsForPageURL(url, NULL));
   EXPECT_FALSE(db.GetIconMappingForPageURL(url, FAVICON, NULL));
 }
 
 TEST_F(ThumbnailDatabaseTest, GetIconMappingsForPageURL) {
   ThumbnailDatabase db;
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   GURL url("http://google.com");
 
   FaviconID id1 = db.AddFavicon(url, TOUCH_ICON);
   base::Time time = base::Time::Now();
-  db.SetFavicon(id1, favicon, time);
+  db.AddFaviconFrame(id1, favicon, time);
   EXPECT_TRUE(0 < db.AddIconMapping(url, id1));
 
   FaviconID id2 = db.AddFavicon(url, FAVICON);
   EXPECT_NE(id1, id2);
-  db.SetFavicon(id2, favicon, time);
+  db.AddFaviconFrame(id2, favicon, time);
   EXPECT_TRUE(0 < db.AddIconMapping(url, id2));
 
   std::vector<IconMapping> icon_mapping;
   EXPECT_TRUE(db.GetIconMappingsForPageURL(url, &icon_mapping));
   ASSERT_EQ(2u, icon_mapping.size());
   EXPECT_NE(icon_mapping[0].icon_id, icon_mapping[1].icon_id);
   EXPECT_TRUE(icon_mapping[0].icon_id == id1 && icon_mapping[1].icon_id == id2);
 }
 
 TEST_F(ThumbnailDatabaseTest, UpgradeToVersion4) {
@@ skipping 12 matching lines @@
   sql.append(name);
   sql.append("("
              "id INTEGER PRIMARY KEY,"
              "url LONGVARCHAR NOT NULL,"
              "last_updated INTEGER DEFAULT 0,"
              "image_data BLOB)");
   EXPECT_TRUE(db.db_.Execute(sql.c_str()));
 
   EXPECT_TRUE(db.UpgradeToVersion4());
 
-  std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
-  scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
+  GURL url("http://google.com");
 
-  GURL url("http://google.com");
-  FaviconID id = db.AddFavicon(url, TOUCH_ICON);
-  base::Time time = base::Time::Now();
-  db.SetFavicon(id, favicon, time);
+  sql::Statement statement;
+  statement.Assign(db.db_.GetCachedStatement(SQL_FROM_HERE,
+      "INSERT INTO favicons (url, icon_type) VALUES (?, ?)"));
+  statement.BindString(0, URLDatabase::GURLToDatabaseURL(url));
+  statement.BindInt(1, TOUCH_ICON);
+  EXPECT_TRUE(statement.Run());
 
-  EXPECT_TRUE(0 < db.AddIconMapping(url, id));
-  IconMapping icon_mapping;
-  EXPECT_TRUE(db.GetIconMappingForPageURL(url, TOUCH_ICON, &icon_mapping));
-  EXPECT_EQ(url, icon_mapping.page_url);
-  EXPECT_EQ(id, icon_mapping.icon_id);
+  statement.Assign(db.db_.GetCachedStatement(SQL_FROM_HERE,
+      "SELECT icon_type FROM favicons"));
+  EXPECT_TRUE(statement.Step());
+
+  EXPECT_EQ(TOUCH_ICON, static_cast<IconType>(statement.ColumnInt(0)));
 }
 
 TEST_F(ThumbnailDatabaseTest, UpgradeToVersion5) {
   ThumbnailDatabase db;
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   const char* name = "favicons";
   std::string sql;
   sql.append("DROP TABLE IF EXISTS ");
@@ skipping 10 matching lines @@
              "image_data BLOB,"
              "icon_type INTEGER DEFAULT 1)");
   ASSERT_TRUE(db.db_.Execute(sql.c_str()));
 
   ASSERT_TRUE(db.UpgradeToVersion5());
 
   sql = "SELECT sizes FROM favicons";
   EXPECT_TRUE(db.db_.Execute(sql.c_str()));
 }
 
+TEST_F(ThumbnailDatabaseTest, UpgradeToVersion6) {
+  ThumbnailDatabase db;
+  ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
+  db.BeginTransaction();
+
+  const char* name = "favicons";
+  std::string sql;
+  sql.append("DROP TABLE IF EXISTS ");
+  sql.append(name);
+  EXPECT_TRUE(db.db_.Execute(sql.c_str()));
+
+  sql.resize(0);
+  sql.append("CREATE TABLE ");
+  sql.append(name);
+  sql.append("("
+             "id INTEGER PRIMARY KEY,"
+             "url LONGVARCHAR NOT NULL,"
+             "last_updated INTEGER DEFAULT 0,"
+             "image_data BLOB,"
+             "icon_type INTEGER DEFAULT 1,"
+             "sizes LONGVARCHAR)");
+  EXPECT_TRUE(db.db_.Execute(sql.c_str()));
+
+  int favicon_id = 1;
+  GURL url("http://google.com");
+  time_t last_updated = Time::Now().ToTimeT();
+  std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
+  scoped_refptr<base::RefCountedBytes> bitmap_data(
+      new base::RefCountedBytes(data));
+
+  sql::Statement statement;
+  statement.Assign(db.db_.GetCachedStatement(SQL_FROM_HERE,
+      "INSERT INTO favicons (id, url, last_updated, image_data, icon_type, "
+      "sizes) VALUES (?, ?, ?, ?, ?, ?)"));
+  statement.BindInt(0, favicon_id);
+  statement.BindString(1, URLDatabase::GURLToDatabaseURL(url));
+  statement.BindInt64(2, last_updated);
+  statement.BindBlob(3, bitmap_data->front(),
+                     static_cast<int>(bitmap_data->size()));
+  statement.BindInt(4, TOUCH_ICON);
+  statement.BindCString(5, "Data which happened to be there");
+  EXPECT_TRUE(statement.Run());
+
+  EXPECT_TRUE(db.UpgradeToVersion6());
+
+  statement.Assign(db.db_.GetCachedStatement(SQL_FROM_HERE,
+      "SELECT id, url, icon_type, sizes FROM favicons"));
+  EXPECT_TRUE(statement.Step());
+  EXPECT_EQ(favicon_id, statement.ColumnInt(0));
+  EXPECT_EQ(url, GURL(statement.ColumnString(1)));
+  EXPECT_EQ(TOUCH_ICON, statement.ColumnInt(2));
+  // sizes should not be copied to new version of database.
+  EXPECT_EQ(std::string(""), statement.ColumnString(3));

[sky, 2012/08/02 19:57:01]

no ""

+
+  // Query width and height to ensure that the columns exist.

[sky, 2012/08/02 19:57:01]

Can you also verify the size is set to 16x16 in the db after migration.

+  statement.Assign(db.db_.GetCachedStatement(SQL_FROM_HERE,
+      "SELECT icon_id, last_updated, image_data, width, height "
+      "FROM favicon_frames"));
+  EXPECT_TRUE(statement.Step());
+  EXPECT_EQ(favicon_id, statement.ColumnInt(0));
+  EXPECT_EQ(last_updated, statement.ColumnInt64(1));
+  EXPECT_EQ(static_cast<int>(bitmap_data->size()),
+            statement.ColumnByteLength(2));
+}
+
 TEST_F(ThumbnailDatabaseTest, TemporayIconMapping) {
   ThumbnailDatabase db;
 
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
 
   db.BeginTransaction();
 
   EXPECT_TRUE(db.InitTemporaryIconMappingTable());
 
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   GURL url("http://google.com");
   FaviconID id = db.AddFavicon(url, FAVICON);
   base::Time time = base::Time::Now();
-  db.SetFavicon(id, favicon, time);
+  db.AddFaviconFrame(id, favicon, time);
 
   db.AddToTemporaryIconMappingTable(url, id);
   db.CommitTemporaryIconMappingTable();
   IconMapping icon_mapping;
   EXPECT_TRUE(db.GetIconMappingForPageURL(url, FAVICON, &icon_mapping));
   EXPECT_EQ(id, icon_mapping.icon_id);
   EXPECT_EQ(url, icon_mapping.page_url);
 }
 
+TEST_F(ThumbnailDatabaseTest, DeleteFavicon) {
+  ThumbnailDatabase db;
+  ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
+  db.BeginTransaction();
+
+  std::vector<unsigned char> data1(blob1, blob1 + sizeof(blob1));
+  scoped_refptr<base::RefCountedBytes> favicon1(
+      new base::RefCountedBytes(data1));
+  std::vector<unsigned char> data2(blob2, blob2 + sizeof(blob2));
+  scoped_refptr<base::RefCountedBytes> favicon2(
+      new base::RefCountedBytes(data2));
+
+  GURL url("http://google.com");
+  FaviconID id = db.AddFavicon(url, FAVICON);
+  base::Time last_updated = base::Time::Now();
+  db.AddFaviconFrame(id, favicon1, last_updated);
+  db.AddFaviconFrame(id, favicon2, last_updated);
+
+  std::vector<unsigned char> result_data;
+  EXPECT_TRUE(db.GetFaviconFrame(id, NULL, &result_data));
+
+  EXPECT_TRUE(db.DeleteFavicon(id));
+  EXPECT_FALSE(db.GetFaviconFrame(id, NULL, &result_data));
+}
+
 TEST_F(ThumbnailDatabaseTest, GetIconMappingsForPageURLForReturnOrder) {
   ThumbnailDatabase db;
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   // Add a favicon
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   GURL url("http://google.com");
   FaviconID id = db.AddFavicon(url, FAVICON);
   base::Time time = base::Time::Now();
-  db.SetFavicon(id, favicon, time);
+  db.AddFaviconFrame(id, favicon, time);
 
   EXPECT_NE(0, db.AddIconMapping(url, id));
   std::vector<IconMapping> icon_mapping;
   EXPECT_TRUE(db.GetIconMappingsForPageURL(url, &icon_mapping));
 
   EXPECT_EQ(url, icon_mapping.front().page_url);
   EXPECT_EQ(id, icon_mapping.front().icon_id);
   EXPECT_EQ(FAVICON, icon_mapping.front().icon_type);
 
   // Add a touch icon
   std::vector<unsigned char> data2(blob2, blob2 + sizeof(blob2));
   scoped_refptr<base::RefCountedBytes> favicon2 =
       new base::RefCountedBytes(data);
 
   FaviconID id2 = db.AddFavicon(url, TOUCH_ICON);
-  db.SetFavicon(id2, favicon2, time);
+  db.AddFaviconFrame(id2, favicon2, time);
   EXPECT_NE(0, db.AddIconMapping(url, id2));
 
   icon_mapping.clear();
   EXPECT_TRUE(db.GetIconMappingsForPageURL(url, &icon_mapping));
 
   EXPECT_EQ(url, icon_mapping.front().page_url);
   EXPECT_EQ(id2, icon_mapping.front().icon_id);
   EXPECT_EQ(TOUCH_ICON, icon_mapping.front().icon_type);
 
   // Add a touch precomposed icon
   scoped_refptr<base::RefCountedBytes> favicon3 =
       new base::RefCountedBytes(data2);
 
   FaviconID id3 = db.AddFavicon(url, TOUCH_PRECOMPOSED_ICON);
-  db.SetFavicon(id3, favicon3, time);
+  db.AddFaviconFrame(id3, favicon3, time);
   EXPECT_NE(0, db.AddIconMapping(url, id3));
 
   icon_mapping.clear();
   EXPECT_TRUE(db.GetIconMappingsForPageURL(url, &icon_mapping));
 
   EXPECT_EQ(url, icon_mapping.front().page_url);
   EXPECT_EQ(id3, icon_mapping.front().icon_id);
   EXPECT_EQ(TOUCH_PRECOMPOSED_ICON, icon_mapping.front().icon_type);
 }
 
 TEST_F(ThumbnailDatabaseTest, HasMappingFor) {
   ThumbnailDatabase db;
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   // Add a favicon which will have icon_mappings
   FaviconID id1 = db.AddFavicon(GURL("http://google.com"), FAVICON);
   EXPECT_NE(id1, 0);
   base::Time time = base::Time::Now();
-  db.SetFavicon(id1, favicon, time);
+  db.AddFaviconFrame(id1, favicon, time);
 
   // Add another type of favicon
   FaviconID id2 = db.AddFavicon(GURL("http://www.google.com/icon"), TOUCH_ICON);
   EXPECT_NE(id2, 0);
   time = base::Time::Now();
-  db.SetFavicon(id2, favicon, time);
+  db.AddFaviconFrame(id2, favicon, time);
 
   // Add 3rd favicon
   FaviconID id3 = db.AddFavicon(GURL("http://www.google.com/icon"), TOUCH_ICON);
   EXPECT_NE(id3, 0);
   time = base::Time::Now();
-  db.SetFavicon(id3, favicon, time);
+  db.AddFaviconFrame(id3, favicon, time);
 
   // Add 2 icon mapping
   GURL page_url("http://www.google.com");
   EXPECT_TRUE(db.AddIconMapping(page_url, id1));
   EXPECT_TRUE(db.AddIconMapping(page_url, id2));
 
   EXPECT_TRUE(db.HasMappingFor(id1));
   EXPECT_TRUE(db.HasMappingFor(id2));
   EXPECT_FALSE(db.HasMappingFor(id3));
 
   // Remove all mappings
   db.DeleteIconMappings(page_url);
   EXPECT_FALSE(db.HasMappingFor(id1));
   EXPECT_FALSE(db.HasMappingFor(id2));
   EXPECT_FALSE(db.HasMappingFor(id3));
 }
 
 TEST_F(ThumbnailDatabaseTest, CloneIconMapping) {
   ThumbnailDatabase db;
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   // Add a favicon which will have icon_mappings
   FaviconID id1 = db.AddFavicon(GURL("http://google.com"), FAVICON);
   EXPECT_NE(0, id1);
   base::Time time = base::Time::Now();
-  db.SetFavicon(id1, favicon, time);
+  db.AddFaviconFrame(id1, favicon, time);
 
   // Add another type of favicon
   FaviconID id2 = db.AddFavicon(GURL("http://www.google.com/icon"), TOUCH_ICON);
   EXPECT_NE(0, id2);
   time = base::Time::Now();
-  db.SetFavicon(id2, favicon, time);
+  db.AddFaviconFrame(id2, favicon, time);
 
   // Add 3rd favicon
   FaviconID id3 = db.AddFavicon(GURL("http://www.google.com/icon"), TOUCH_ICON);
   EXPECT_NE(0, id3);
   time = base::Time::Now();
-  db.SetFavicon(id3, favicon, time);
+  db.AddFaviconFrame(id3, favicon, time);
 
   GURL page1_url("http://page1.com");
   EXPECT_TRUE(db.AddIconMapping(page1_url, id1));
   EXPECT_TRUE(db.AddIconMapping(page1_url, id2));
 
   GURL page2_url("http://page2.com");
   EXPECT_TRUE(db.AddIconMapping(page2_url, id3));
 
   // Test we do nothing with existing mappings.
   std::vector<IconMapping> icon_mapping;
@@ skipping 82 matching lines @@
   ThumbnailDatabase db;
   ASSERT_EQ(sql::INIT_OK, db.Init(file_name_, NULL, NULL));
   db.BeginTransaction();
 
   std::vector<unsigned char> data(blob1, blob1 + sizeof(blob1));
   scoped_refptr<base::RefCountedBytes> favicon(new base::RefCountedBytes(data));
 
   GURL url("http://google.com");
   FaviconID touch_icon_id1 = db.AddFavicon(url, TOUCH_ICON);
   ASSERT_NE(0, touch_icon_id1);
-  ASSERT_TRUE(db.SetFavicon(touch_icon_id1, favicon, base::Time::Now()));
+  ASSERT_TRUE(db.AddFaviconFrame(touch_icon_id1, favicon, base::Time::Now()));
   IconMappingID touch_mapping_id1 = db.AddIconMapping(url, touch_icon_id1);
   ASSERT_NE(0, touch_mapping_id1);
 
   FaviconID favicon_id1 = db.AddFavicon(url, FAVICON);
   ASSERT_NE(0, favicon_id1);
-  ASSERT_TRUE(db.SetFavicon(favicon_id1, favicon, base::Time::Now()));
+  ASSERT_TRUE(db.AddFaviconFrame(favicon_id1, favicon, base::Time::Now()));
   IconMappingID favicon_mapping_id1 = db.AddIconMapping(url, favicon_id1);
   ASSERT_NE(0, favicon_mapping_id1);
 
   GURL url2("http://chromium.org");
   FaviconID favicon_id2 = db.AddFavicon(url2, FAVICON);
   ASSERT_NE(0, favicon_id2);
-  ASSERT_TRUE(db.SetFavicon(favicon_id2, favicon, base::Time::Now()));
+  ASSERT_TRUE(db.AddFaviconFrame(favicon_id2, favicon, base::Time::Now()));
   IconMappingID favicon_mapping_id2 = db.AddIconMapping(url2, favicon_id2);
   ASSERT_NE(0, favicon_mapping_id2);
 
   IconMapping icon_mapping;
   ThumbnailDatabase::IconMappingEnumerator enumerator1;
   ASSERT_TRUE(db.InitIconMappingEnumerator(FAVICON, &enumerator1));
   // There are 2 favicon mappings.
   bool has_favicon_mapping1 = false;
   bool has_favicon_mapping2 = false;
   int mapping_count = 0;
@@ skipping 20 matching lines @@
   ASSERT_TRUE(enumerator2.GetNextIconMapping(&icon_mapping));
   EXPECT_EQ(touch_mapping_id1, icon_mapping.mapping_id);
   EXPECT_EQ(url, icon_mapping.page_url);
   EXPECT_EQ(touch_icon_id1, icon_mapping.icon_id);
   EXPECT_EQ(TOUCH_ICON, icon_mapping.icon_type);
 
   EXPECT_FALSE(enumerator2.GetNextIconMapping(&icon_mapping));
 }
 
 }  // namespace history