Remove code to defer app window appearance until first paint.

chrome/browser/about_flags.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 "chrome/browser/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 1288 matching lines @@
      FEATURE_VALUE_TYPE(features::kNativeNotifications)},
 #endif  // OS_MACOSX
 #if defined(TOOLKIT_VIEWS)
     {"disable-views-rect-based-targeting",
      IDS_FLAGS_VIEWS_RECT_BASED_TARGETING_NAME,
      IDS_FLAGS_VIEWS_RECT_BASED_TARGETING_DESCRIPTION,
      kOsCrOS | kOsWin | kOsLinux,
      SINGLE_DISABLE_VALUE_TYPE(
          views::switches::kDisableViewsRectBasedTargeting)},
 #endif  // TOOLKIT_VIEWS
-#if BUILDFLAG(ENABLE_EXTENSIONS)
-    {"enable-apps-show-on-first-paint", IDS_FLAGS_APPS_SHOW_ON_FIRST_PAINT_NAME,
-     IDS_FLAGS_APPS_SHOW_ON_FIRST_PAINT_DESCRIPTION, kOsDesktop,
-     SINGLE_VALUE_TYPE(extensions::switches::kEnableAppsShowOnFirstPaint)},
-#endif  // ENABLE_EXTENSIONS
 #if defined(OS_ANDROID)
     {"reader-mode-heuristics", IDS_FLAGS_READER_MODE_HEURISTICS_NAME,
      IDS_FLAGS_READER_MODE_HEURISTICS_DESCRIPTION, kOsAndroid,
      MULTI_VALUE_TYPE(kReaderModeHeuristicsChoices)},
 #endif  // OS_ANDROID
 #if defined(OS_ANDROID)
     {"enable-chrome-home", IDS_FLAGS_CHROME_HOME_NAME,
      IDS_FLAGS_CHROME_HOME_DESCRIPTION, kOsAndroid,
      FEATURE_VALUE_TYPE(chrome::android::kChromeHomeFeature)},
 #endif  // OS_ANDROID
@@ skipping 981 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags