Revert 194484 "Add the LoggedIn Predictor, to detect which websi..."

trunk/src/chrome/browser/predictors/logged_in_predictor_table.cc

Index: trunk/src/chrome/browser/predictors/logged_in_predictor_table.cc
===================================================================
--- trunk/src/chrome/browser/predictors/logged_in_predictor_table.cc	(revision 194504)
+++ trunk/src/chrome/browser/predictors/logged_in_predictor_table.cc	(working copy)
@@ -1,125 +0,0 @@
-// Copyright (c) 2013 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/predictors/logged_in_predictor_table.h"
-
-#include <algorithm>
-#include <utility>
-#include "base/logging.h"
-#include "base/metrics/histogram.h"
-#include "base/stringprintf.h"
-#include "content/public/browser/browser_thread.h"
-#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
-#include "sql/statement.h"
-
-using content::BrowserThread;
-using sql::Statement;
-using std::string;
-
-namespace {
-
-const char kTableName[] = "logged_in_predictor";
-
-}  // namespace
-
-namespace predictors {
-
-LoggedInPredictorTable::LoggedInPredictorTable()
-    : PredictorTableBase() {
-}
-
-LoggedInPredictorTable::~LoggedInPredictorTable() {
-}
-
-string LoggedInPredictorTable::GetKey(const GURL& url) const {
-  string effective_domain(
-      net::RegistryControlledDomainService::GetDomainAndRegistry(url.host()));
-  if (effective_domain.empty())
-    effective_domain = url.host();
-
-  // Strip off a preceding ".", if present.
-  if (!effective_domain.empty() && effective_domain[0] == '.')
-    return effective_domain.substr(1);
-  return effective_domain;
-}
-
-void LoggedInPredictorTable::Add(const GURL& url) {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
-  if (CantAccessDatabase())
-    return;
-
-  Statement statement(DB()->GetCachedStatement(SQL_FROM_HERE,
-      base::StringPrintf("INSERT OR IGNORE INTO %s (domain, time) VALUES (?,?)",
-                         kTableName).c_str()));
-
-  statement.BindString(0, GetKey(url));
-  statement.BindInt64(1, base::Time::Now().ToInternalValue());
-
-  statement.Run();
-}
-
-void LoggedInPredictorTable::HasUserLoggedIn(const GURL& url, bool* is_present,
-                                             bool* lookup_succeeded) {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
-  *lookup_succeeded = false;
-  if (CantAccessDatabase())
-    return;
-
-  Statement statement(DB()->GetCachedStatement(SQL_FROM_HERE,
-      base::StringPrintf("SELECT count(*) FROM %s WHERE domain=?",
-                         kTableName).c_str()));
-
-  statement.BindString(0, GetKey(url));
-
-  if (statement.Step()) {
-    *is_present = (statement.ColumnInt(0) > 0);
-    *lookup_succeeded = true;
-  }
-}
-
-void LoggedInPredictorTable::DeleteAllCreatedBetween(
-    const base::Time& delete_begin, const base::Time& delete_end) {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
-  if (CantAccessDatabase())
-    return;
-
-  Statement statement(DB()->GetCachedStatement(SQL_FROM_HERE,
-      base::StringPrintf("DELETE FROM %s WHERE time >= ? AND time <= ?",
-                         kTableName).c_str()));
-
-  statement.BindInt64(0, delete_begin.ToInternalValue());
-  statement.BindInt64(1, delete_end.ToInternalValue());
-
-  statement.Run();
-}
-
-void LoggedInPredictorTable::CreateTableIfNonExistent() {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
-  if (CantAccessDatabase())
-    return;
-
-  sql::Connection* db = DB();
-  if (db->DoesTableExist(kTableName))
-    return;
-
-  const char* table_creator =
-      "CREATE TABLE %s (domain TEXT, time INTEGER, PRIMARY KEY(domain))";
-
-  if (!db->Execute(base::StringPrintf(table_creator, kTableName).c_str()))
-    ResetDB();
-}
-
-void LoggedInPredictorTable::LogDatabaseStats()  {
-  CHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
-  if (CantAccessDatabase())
-    return;
-
-  Statement statement(DB()->GetCachedStatement(SQL_FROM_HERE,
-      base::StringPrintf("SELECT count(*) FROM %s", kTableName).c_str()));
-  if (statement.Step())
-    UMA_HISTOGRAM_COUNTS("LoggedInPredictor.TableRowCount",
-                         statement.ColumnInt(0));
-}
-
-}  // namespace predictors