[reland] Cros splitscreen: Disable splitscreen on M66 stable channel.

Per PM's request, disable splitscreen on M66 stable channel.
This CL will be merged back to M66 and then reverted later on tot.

[email protected]

Bug: 827322
Change-Id: I0040d7a8e98841fee1808fe3a0589dd3c8b384ef
Reviewed-on: https://chromium-review.googlesource.com/993472
Reviewed-by: Xiaoqian Dai <[email protected]>
Commit-Queue: Xiaoqian Dai <[email protected]>
Cr-Commit-Position: refs/heads/master@{#547844}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 60af9d1..9c9f598 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -3485,9 +3485,9 @@
      FEATURE_VALUE_TYPE(features::kEnablePixelCanvasRecording)},
 
 #if defined(OS_CHROMEOS)
-    {"disable-tablet-splitview", flag_descriptions::kDisableTabletSplitViewName,
-     flag_descriptions::kDisableTabletSplitViewDescription, kOsCrOS,
-     SINGLE_VALUE_TYPE(ash::switches::kAshDisableTabletSplitView)},
+    {"enable-tablet-splitview", flag_descriptions::kEnableTabletSplitViewName,
+     flag_descriptions::kEnableTabletSplitViewDescription, kOsCrOS,
+     SINGLE_VALUE_TYPE(ash::switches::kAshEnableTabletSplitView)},
 #endif  // defined(OS_CHROMEOS)
 
     {"enable-parallel-downloading", flag_descriptions::kParallelDownloadingName,