[WIP] Speculatively launch Service Workers on mouse/touch events.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index b67e497148778b6c2e4798da4e4cdd82af242263..79df0c02ac0ff88789f775d56012a5f018ecb2a8 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -524,6 +524,10 @@ const char kEnableSiteEngagementEvictionPolicy[] =
 // allocates certain resources accordingly.
 const char kEnableSiteEngagementService[]   = "enable-site-engagement-service";
 
+// Enables the speculative launch of Service Workers on mouse/touch events.
+const char kEnableSupeculativeLaunchServiceWorker[] =
+    "enable-speculative-launch-service-worker";
+
 // Enables the supervised user managed bookmarks folder.
 const char kEnableSupervisedUserManagedBookmarksFolder[] =
     "enable-supervised-user-managed-bookmarks-folder";