Make Desktop Capture New Feature Default On

We've finished the development of
1. Capturing a single chromium tab for desktop share
2. A new picker UI, which is more user friendly

During the developement, we hide the new feature behind a flag.
This CL makes the new feature default on.

BUG=557222, 624898

Review-Url: https://codereview.chromium.org/2125063002
Cr-Commit-Position: refs/heads/master@{#404424}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index f41ed25..c6c6ccb 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1823,14 +1823,13 @@
 #if defined(ENABLE_EXTENSIONS)
     {"tab-for-desktop-share", IDS_FLAG_DISABLE_TAB_FOR_DESKTOP_SHARE,
      IDS_FLAG_DISABLE_TAB_FOR_DESKTOP_SHARE_DESCRIPTION, kOsAll,
-     ENABLE_DISABLE_VALUE_TYPE(
-         extensions::switches::kEnableTabForDesktopShare,
-         extensions::switches::kDisableTabForDesktopShare)},
-    {"disable-desktop-capture-picker-old-ui",
-     IDS_FLAG_DISABLE_DESKTOP_CAPTURE_PICKER_OLD_UI,
-     IDS_FLAG_DISABLE_DESKTOP_CAPTURE_PICKER_OLD_UI_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(
-         extensions::switches::kDisableDesktopCapturePickerOldUI)},
+         extensions::switches::kDisableTabForDesktopShare)},
+    {"disable-desktop-capture-picker-new-ui",
+     IDS_FLAG_DISABLE_DESKTOP_CAPTURE_PICKER_NEW_UI,
+     IDS_FLAG_DISABLE_DESKTOP_CAPTURE_PICKER_NEW_UI_DESCRIPTION, kOsAll,
+     SINGLE_VALUE_TYPE(
+         extensions::switches::kDisableDesktopCapturePickerNewUI)},
 #endif
 #if defined(OS_ANDROID)
     {"enable-ntp-snippets", IDS_FLAGS_ENABLE_NTP_SNIPPETS_NAME,