Revert of "Speculatively launch Service Workers on mouse/touch events."

chrome/browser/flag_descriptions.cc

 // Copyright 2017 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/flag_descriptions.h"
 
 namespace flag_descriptions {
 
 //  Material Design version of chrome://bookmarks
 
@@ skipping 1095 matching lines @@
     "V8 caching strategy for CacheStorage.";
 
 const char kV8CacheStrategiesForCacheStorageDescription[] =
     "Caching strategy of scripts in CacheStorage for the V8 JavaScript "
     "engine.";
 
 const char kV8CacheStrategiesForCacheStorageNormal[] = "Normal";
 
 const char kV8CacheStrategiesForCacheStorageAggressive[] = "Aggressive";
 
-const char kSpeculativeLaunchServiceWorkerName[] =
-    "Speculative launch of service workers.";
-
-const char kSpeculativeLaunchServiceWorkerDescription[] =
-    "Speculatively launch service workers using touch and mouse events.";
-
 const char kMemoryCoordinatorName[] = "Memory coordinator";
 
 const char kMemoryCoordinatorDescription[] =
     "Enable memory coordinator instead of memory pressure listeners.";
 
 const char kServiceWorkerNavigationPreloadName[] =
     "Service worker navigation preload.";
 
 const char kServiceWorkerNavigationPreloadDescription[] =
     "Enable web pages to use the experimental service worker navigation "
@@ skipping 1775 matching lines @@
 const char kEnableEhvInputName[] =
     "Emoji, handwriting and voice input on opt-in IME menu";
 
 const char kEnableEhvInputDescription[] =
     "Enable access to emoji, handwriting and voice input form opt-in IME "
     "menu.";
 
 #endif  // #if defined(OS_CHROMEOS)
 
 }  // namespace flag_descriptions