Experiment to hide close buttons of inactive tabs when using touch

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 85083ae0700872d152bf9b79d046c131da4f3342..3931fa924212b5107df030c82a4c9eac0be6ed47 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -745,6 +745,11 @@ const char kTabCaptureDownscaleQuality[]    = "tab-capture-downscale-quality";
 // Upscale defaults to "best".
 const char kTabCaptureUpscaleQuality[]      = "tab-capture-upscale-quality";
 
+// Options for hiding the close buttons of inactive tabs when touch
+// is used to interact with the tabstrip.
+const char kTabCloseButtonsHiddenWithTouch[] =
+    "tab-close-buttons-hidden-with-touch";
+
 // Allows for forcing socket connections to http/https to use fixed ports.
 const char kTestingFixedHttpPort[]          = "testing-fixed-http-port";
 const char kTestingFixedHttpsPort[]         = "testing-fixed-https-port";