Enable ParseHTMLOnMainThread on TOT

third_party/WebKit/Source/core/frame/Settings.json5

 {
   // Defines properties which are available on the Settings object.
   //
   // Please think carefully before adding a new Setting.  Some questions to
   // consider are:
   // - Should this be a RuntimeEnabledFeature instead? Settings are for things
   //   which we support either values of at runtime.  Features are set at renderer
   //   process startup and are never changed. Features also tend to be set to a
   //   value based on the platform or the stability of the code in question, where
   //   as settings both codepaths need to be stable.
@@ skipping 836 matching lines @@
       type: "PassiveListenerDefault",
     },
 
     // Use default interpolation quality to scale bitmap images if quality is not determined
     // in other ways. This can help us writing reftests containing scaled images.
     {
       name: "useDefaultImageInterpolationQuality",
       initial: false,
     },
 
-    // Variant of the ParseHTMLOnMainThread experiment. One experiment immediately
-    // tokenizes input bytes. The default is to tokenize with a post task.
-    {
-      name: "parseHTMLOnMainThreadSyncTokenize",
-      initial: false,
-    },
-
-    // Variant of the ParseHTMLOnMainThread experiment. This is designed to coalesce
-    // TokenizedChunks when the experiment is running in threaded mode.
-    {
-      name: "parseHTMLOnMainThreadCoalesceChunks",
-      initial: false,
-    },
-
     // Whether the CSSPreloadScanner is used for externally CSS preloads. NoPreload
     // indicates that the scanner will be used, but no preloads issued.
     {
       name: "cssExternalScannerNoPreload",
       initial: false,
     },
     {
       name: "cssExternalScannerPreload",
       initial: false,
     },
@@ skipping 35 matching lines @@
     },
 
     // Whether the frame is a presentation receiver and should expose
     // `navigator.presentation.receiver`.
     {
       name: "presentationReceiver",
       initial: false,
     },
   ],
 }