Revert 243967 "Use a Finch Experiment to control the Browser Bla..."

trunk/src/chrome/browser/chrome_elf_init_win.cc

Index: trunk/src/chrome/browser/chrome_elf_init_win.cc
===================================================================
--- trunk/src/chrome/browser/chrome_elf_init_win.cc	(revision 244024)
+++ trunk/src/chrome/browser/chrome_elf_init_win.cc	(working copy)
@@ -1,103 +0,0 @@
-// Copyright 2014 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 "base/metrics/field_trial.h"
-#include "base/metrics/histogram.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/win/registry.h"
-#include "chrome/browser/chrome_elf_init_win.h"
-#include "chrome_elf/blacklist/blacklist.h"
-#include "version.h"  // NOLINT
-
-namespace {
-
-const char kBrowserBlacklistTrialName[] = "BrowserBlacklist";
-const char kBrowserBlacklistTrialEnabledGroupName[] = "Enabled";
-
-// This enum is used to define the buckets for an enumerated UMA histogram.
-// Hence,
-//   (a) existing enumerated constants should never be deleted or reordered, and
-//   (b) new constants should only be appended in front of
-//       BLACKLIST_SETUP_EVENT_MAX.
-enum BlacklistSetupEventType {
-  // The blacklist beacon has placed to enable the browser blacklisting.
-  BLACKLIST_SETUP_ENABLED = 0,
-
-  // The blacklist was successfully enabled.
-  BLACKLIST_SETUP_RAN_SUCCESSFULLY,
-
-  // The blacklist setup code failed to execute.
-  BLACKLIST_SETUP_FAILED,
-
-  // Always keep this at the end.
-  BLACKLIST_SETUP_EVENT_MAX,
-};
-
-void RecordBlacklistSetupEvent(BlacklistSetupEventType blacklist_setup_event) {
-  UMA_HISTOGRAM_ENUMERATION("Blacklist.Setup",
-                            blacklist_setup_event,
-                            BLACKLIST_SETUP_EVENT_MAX);
-}
-
-}  // namespace
-
-void InitializeChromeElf() {
-  if (base::FieldTrialList::FindFullName(kBrowserBlacklistTrialName) ==
-      kBrowserBlacklistTrialEnabledGroupName) {
-    BrowserBlacklistBeaconSetup();
-  } else {
-    // Disable the blacklist for all future runs by removing the beacon.
-    base::win::RegKey blacklist_registry_key(HKEY_CURRENT_USER);
-    blacklist_registry_key.DeleteKey(blacklist::kRegistryBeaconPath);
-  }
-}
-
-void BrowserBlacklistBeaconSetup() {
-  base::win::RegKey blacklist_registry_key(HKEY_CURRENT_USER,
-                                           blacklist::kRegistryBeaconPath,
-                                           KEY_QUERY_VALUE | KEY_SET_VALUE);
-
-  // Find the last recorded blacklist version.
-  base::string16 blacklist_version;
-  blacklist_registry_key.ReadValue(blacklist::kBeaconVersion,
-                                   &blacklist_version);
-
-  if (blacklist_version != TEXT(CHROME_VERSION_STRING)) {
-    // The blacklist hasn't run for this version yet, so enable it.
-    LONG set_version = blacklist_registry_key.WriteValue(
-        blacklist::kBeaconVersion,
-        TEXT(CHROME_VERSION_STRING));
-
-    LONG set_state = blacklist_registry_key.WriteValue(
-        blacklist::kBeaconState,
-        blacklist::BLACKLIST_ENABLED);
-
-    // Only report the blacklist as getting setup when both registry writes
-    // succeed, since otherwise the blacklist wasn't properly setup.
-    if (set_version == ERROR_SUCCESS && set_state == ERROR_SUCCESS)
-      RecordBlacklistSetupEvent(BLACKLIST_SETUP_ENABLED);
-
-    // Don't try to record if the blacklist setup succeeded or failed in the
-    // run since it could have been from either this version or the previous
-    // version (since crashes occur before we set the version in the registry).
-  } else {
-    // The blacklist version didn't change, so record the results of the
-    // latest setup.
-    DWORD blacklist_state = blacklist::BLACKLIST_STATE_MAX;
-    blacklist_registry_key.ReadValueDW(blacklist::kBeaconState,
-                                       &blacklist_state);
-
-    // Record the results of the latest blacklist setup.
-    if (blacklist_state == blacklist::BLACKLIST_ENABLED) {
-      RecordBlacklistSetupEvent(BLACKLIST_SETUP_RAN_SUCCESSFULLY);
-    } else if (blacklist_state == blacklist::BLACKLIST_SETUP_RUNNING) {
-      RecordBlacklistSetupEvent(BLACKLIST_SETUP_FAILED);
-
-      // Since the setup failed, mark the blacklist as disabled so we don't
-      // try it again for this version.
-      blacklist_registry_key.WriteValue(blacklist::kBeaconState,
-                                        blacklist::BLACKLIST_DISABLED);
-    }
-  }
-}