Purge the App Launcher code from Windows.

chrome/browser/ui/views/app_list/win/app_list_service_win.cc

-// Copyright 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/ui/views/app_list/win/app_list_service_win.h"
-
-#include <stddef.h>
-#include <stdint.h>
-#include <sstream>
-
-#include "base/command_line.h"
-#include "base/location.h"
-#include "base/macros.h"
-#include "base/memory/singleton.h"
-#include "base/metrics/histogram.h"
-#include "base/path_service.h"
-#include "base/single_thread_task_runner.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/threading/sequenced_worker_pool.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "base/time/time.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/browser_shutdown.h"
-#include "chrome/browser/platform_util.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/browser/ui/app_list/app_list_util.h"
-#include "chrome/browser/ui/views/app_list/win/activation_tracker_win.h"
-#include "chrome/browser/ui/views/app_list/win/app_list_controller_delegate_win.h"
-#include "chrome/browser/ui/views/app_list/win/app_list_win.h"
-#include "chrome/common/channel_info.h"
-#include "chrome/common/chrome_constants.h"
-#include "chrome/common/chrome_switches.h"
-#include "chrome/common/pref_names.h"
-#include "chrome/installer/util/browser_distribution.h"
-#include "components/prefs/pref_service.h"
-#include "components/version_info/version_info.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/common/content_switches.h"
-#include "ui/app_list/views/app_list_view.h"
-#include "ui/base/ui_base_switches.h"
-
-#if defined(GOOGLE_CHROME_BUILD)
-#include "chrome/installer/util/google_update_settings.h"
-#include "chrome/installer/util/install_util.h"
-#include "chrome/installer/util/updating_app_registration_data.h"
-#include "chrome/installer/util/util_constants.h"
-#endif  // GOOGLE_CHROME_BUILD
-
-// static
-AppListService* AppListService::Get() {
-  return AppListServiceWin::GetInstance();
-}
-
-// static
-void AppListService::InitAll(Profile* initial_profile,
-                             const base::FilePath& profile_path) {
-  AppListServiceWin::GetInstance()->Init(initial_profile);
-}
-
-namespace {
-
-const int kUnusedAppListNoWarmupDays = 28;
-
-#if defined(GOOGLE_CHROME_BUILD)
-void SetDidRunForNDayActiveStats() {
-  DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
-  base::FilePath exe_path;
-  if (!PathService::Get(base::DIR_EXE, &exe_path)) {
-    NOTREACHED();
-    return;
-  }
-  bool system_install = !InstallUtil::IsPerUserInstall(exe_path);
-  // Using Chrome Binary dist: Chrome dist may not exist for the legacy
-  // App Launcher, and App Launcher dist may be "shadow", which does not
-  // contain the information needed to determine multi-install.
-  // Edge case involving Canary: crbug/239163.
-  BrowserDistribution* chrome_binaries_dist =
-      BrowserDistribution::GetSpecificDistribution(
-          BrowserDistribution::CHROME_BINARIES);
-  if (chrome_binaries_dist &&
-      InstallUtil::IsMultiInstall(chrome_binaries_dist, system_install)) {
-    UpdatingAppRegistrationData app_launcher_reg_data(
-        installer::kAppLauncherGuid);
-    GoogleUpdateSettings::UpdateDidRunStateForApp(

[tapted, 2016/07/20 01:15:34]

This is the only caller external to google_update_settings.cc --
UpdateDidRunStateForBinaries should just call WriteGoogleUpdateStrKeyInternal
directly

[calamity, 2016/07/25 02:34:22]

Done.

-        app_launcher_reg_data, true /* did_run */);
-  }
-}
-#endif  // GOOGLE_CHROME_BUILD
-
-}  // namespace
-
-// static
-AppListServiceWin* AppListServiceWin::GetInstance() {
-  return base::Singleton<AppListServiceWin,
-                         base::LeakySingletonTraits<AppListServiceWin>>::get();
-}
-
-AppListServiceWin::AppListServiceWin()
-    : AppListServiceViews(std::unique_ptr<AppListControllerDelegate>(
-          new AppListControllerDelegateWin(this))) {}
-
-AppListServiceWin::~AppListServiceWin() {
-}
-
-void AppListServiceWin::ShowForProfile(Profile* requested_profile) {
-  AppListServiceViews::ShowForProfile(requested_profile);
-
-#if defined(GOOGLE_CHROME_BUILD)
-  content::BrowserThread::PostBlockingPoolTask(
-      FROM_HERE, base::Bind(SetDidRunForNDayActiveStats));
-#endif  // GOOGLE_CHROME_BUILD
-}
-
-void AppListServiceWin::OnLoadProfileForWarmup(Profile* initial_profile) {
-  // App list profiles should not be off-the-record.
-  DCHECK(!initial_profile->IsOffTheRecord());
-  DCHECK(!initial_profile->IsGuestSession());
-
-  if (!IsWarmupNeeded())
-    return;
-
-  base::Time before_warmup(base::Time::Now());
-  shower().WarmupForProfile(initial_profile);

[tapted, 2016/07/20 01:15:34]

I think this is the only caller of WarmupForProfile(), so we should delete that
now from AppListShower, then scythe out all the related stuff -->
AppListView::Prerender (and all the stuff it calls). We can probably remove
app_list/views/cached_label completely too, since PaintToBackingImage() is only
called in AppListItemView::Prerender()

[calamity, 2016/07/25 02:34:22]

Done.

-  UMA_HISTOGRAM_TIMES("Apps.AppListWarmupDuration",

[tapted, 2016/07/20 01:15:34]

Mark obsolete in histograms.xml

[calamity, 2016/07/25 02:34:22]

Done.

-                      base::Time::Now() - before_warmup);
-}
-
-void AppListServiceWin::SetAppListNextPaintCallback(void (*callback)()) {
-  if (shower().app_list())
-    shower().app_list()->SetNextPaintCallback(base::Bind(callback));

[tapted, 2016/07/20 01:15:34]

This is the only caller of SetNextPaintCallback() outside of
app_list_view_unittest.cc - we should rewrite the test and delete
SetNextPaintCallback (or at least move it to the test API).

[calamity, 2016/07/25 02:34:22]

Done.

-  else
-    next_paint_callback_ = base::Bind(callback);
-}
-
-void AppListServiceWin::Init(Profile* initial_profile) {
-  ScheduleWarmup();
-  AppListServiceViews::Init(initial_profile);
-}
-
-void AppListServiceWin::CreateShortcut() {
-  NOTREACHED();
-}
-
-void AppListServiceWin::ScheduleWarmup() {
-  // Post a task to create the app list. This is posted to not impact startup
-  // time.
-  /* const */ int kInitWindowDelay = 30;
-
-  // TODO(vadimt): Make kInitWindowDelay const and remove the below switch once
-  // crbug.com/431326 is fixed.
-
-  // Profiler UMA data is reported only for first 30 sec after browser startup.
-  // To make all invocations of AppListServiceWin::LoadProfileForWarmup visible
-  // to the server-side analysis tool, reducing this period to 10 sec in Dev
-  // builds and Canary, where profiler instrumentations are enabled.
-  switch (chrome::GetChannel()) {
-    case version_info::Channel::UNKNOWN:
-    case version_info::Channel::CANARY:
-      kInitWindowDelay = 10;
-      break;
-
-    case version_info::Channel::DEV:
-    case version_info::Channel::BETA:
-    case version_info::Channel::STABLE:
-      // Except on Canary, don't bother scheduling an app launcher warmup when
-      // it's not already enabled. Always schedule on Canary while collecting
-      // profiler data (see comment above).
-      if (!IsAppLauncherEnabled())
-        return;
-
-      // Profiler instrumentations are not enabled.
-      break;
-  }
-
-  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
-      FROM_HERE, base::Bind(&AppListServiceWin::LoadProfileForWarmup,
-                            base::Unretained(this)),
-      base::TimeDelta::FromSeconds(kInitWindowDelay));
-}
-
-bool AppListServiceWin::IsWarmupNeeded() {
-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-  if (!g_browser_process || g_browser_process->IsShuttingDown() ||
-      browser_shutdown::IsTryingToQuit() ||
-      command_line->HasSwitch(switches::kTestType)) {
-    return false;
-  }
-
-  // Don't warm up the app list if it hasn't been used for a while. If the last
-  // launch is unknown, record it as "used" on the first warmup.
-  PrefService* local_state = g_browser_process->local_state();
-  int64_t last_launch_time_pref =
-      local_state->GetInt64(prefs::kAppListLastLaunchTime);

[tapted, 2016/07/20 01:15:34]

This is the only getter, so this should be deleted from prefs::

[calamity, 2016/07/25 02:34:22]

Done.

-  if (last_launch_time_pref == 0)
-    RecordAppListLastLaunch();
-
-  base::Time last_launch_time =
-      base::Time::FromInternalValue(last_launch_time_pref);
-  if (base::Time::Now() - last_launch_time >
-      base::TimeDelta::FromDays(kUnusedAppListNoWarmupDays)) {
-    return false;
-  }
-
-  // We only need to initialize the view if there's no view already created and
-  // there's no profile loading to be shown.
-  return !shower().HasView() && !profile_loader().IsAnyProfileLoading();

[tapted, 2016/07/20 01:15:34]

hm - I don't think linux calls IsAnyProfileLoading(), but it's used a lot in
tests. I guess this can wait until we delete Linux + ProfileLoader 

[calamity, 2016/07/25 02:34:22]

Acknowledged.

-}
-
-void AppListServiceWin::LoadProfileForWarmup() {
-  if (!IsWarmupNeeded())
-    return;
-
-  ProfileManager* profile_manager = g_browser_process->profile_manager();
-  base::FilePath profile_path(GetProfilePath(profile_manager->user_data_dir()));
-
-  profile_loader().LoadProfileInvalidatingOtherLoads(
-      profile_path,
-      base::Bind(&AppListServiceWin::OnLoadProfileForWarmup,
-                 base::Unretained(this)));
-}
-
-void AppListServiceWin::OnViewBeingDestroyed() {
-  activation_tracker_.reset();
-  AppListServiceViews::OnViewBeingDestroyed();
-}
-
-void AppListServiceWin::OnViewCreated() {
-  if (!next_paint_callback_.is_null()) {
-    shower().app_list()->SetNextPaintCallback(next_paint_callback_);
-    next_paint_callback_.Reset();
-  }
-  activation_tracker_.reset(new ActivationTrackerWin(this));
-}
-
-void AppListServiceWin::OnViewDismissed() {
-  activation_tracker_->OnViewHidden();
-}
-
-void AppListServiceWin::MoveNearCursor(app_list::AppListView* view) {
-  AppListWin::MoveNearCursor(view);
-}