Make touch drag drop and touch editing flags tri-state and turn them on by

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 1e7902ba207e5d2795b601e55d16af2a37d4f341..518805268b20c551462fef879fc85964ff8ea254 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1248,14 +1248,16 @@ const Experiment kExperiments[] = {
     IDS_FLAGS_ENABLE_TOUCH_DRAG_DROP_NAME,
     IDS_FLAGS_ENABLE_TOUCH_DRAG_DROP_DESCRIPTION,
     kOsWin | kOsCrOS,
-    SINGLE_VALUE_TYPE(switches::kEnableTouchDragDrop)
+    ENABLE_DISABLE_VALUE_TYPE(switches::kEnableTouchDragDrop,
+                              switches::kDisableTouchDragDrop)
   },
   {
     "enable-touch-editing",
     IDS_FLAGS_ENABLE_TOUCH_EDITING_NAME,
     IDS_FLAGS_ENABLE_TOUCH_EDITING_DESCRIPTION,
     kOsCrOS,
-    SINGLE_VALUE_TYPE(switches::kEnableTouchEditing)
+    ENABLE_DISABLE_VALUE_TYPE(switches::kEnableTouchEditing,
+                              switches::kDisableTouchEditing)
   },
 #if defined(ENABLE_MESSAGE_CENTER)
   {