Implemented swipe to close in overview mode.

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 317fc15bdf69d8be674e59fe23488cc9d2042071..b5dc1caf40047bf3e7c0b25950b8f2bc1e132450 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1032,6 +1032,14 @@ const Experiment kExperiments[] = {
     kOsAll,
     SINGLE_VALUE_TYPE(ash::switches::kAshDebugShortcuts),
   },
+  {
+    "ash-disable-swipe-to-close-in-overview-mode",
+    IDS_FLAGS_ASH_DISABLE_SWIPE_TO_CLOSE_IN_OVERVIEW_MODE_NAME,
+    IDS_FLAGS_ASH_DISABLE_SWIPE_TO_CLOSE_IN_OVERVIEW_MODE_DESCRIPTION,
+    // TODO(bruthig): Add kOsWin when http://crbug.com/333758 is resolved.
+    kOsCrOS,
+    SINGLE_VALUE_TYPE(ash::switches::kAshDisableSwipeToCloseInOverviewMode),
+  },
   { "ash-enable-touch-view-testing",
     IDS_FLAGS_ASH_ENABLE_TOUCH_VIEW_TESTING_NAME,
     IDS_FLAGS_ASH_ENABLE_TOUCH_VIEW_TESTING_DESCRIPTION,