Limit tab sharing to Dev and Canary

chrome/browser/extensions/api/desktop_capture/desktop_capture_base.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/desktop_capture/desktop_capture_base.h"
 
 #include <tuple>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 89 matching lines @@
 
       case api::desktop_capture::DESKTOP_CAPTURE_SOURCE_TYPE_TAB:
         if (base::CommandLine::ForCurrentProcess()->HasSwitch(
                 extensions::switches::kEnableTabForDesktopShare)) {
           show_tabs = true;
         } else if (base::CommandLine::ForCurrentProcess()->HasSwitch(
             extensions::switches::kDisableTabForDesktopShare)) {
           show_tabs = false;
         } else {
           const version_info::Channel channel = chrome::GetChannel();
-          show_tabs = (channel != version_info::Channel::STABLE);
+          if ((channel == version_info::Channel::STABLE) ||
+              (channel == version_info::Channel::BETA)) {
+            show_tabs = false;
+          } else {
+            show_tabs = true;
+          }
         }
         break;
 
       case api::desktop_capture::DESKTOP_CAPTURE_SOURCE_TYPE_AUDIO:
         bool has_flag = base::CommandLine::ForCurrentProcess()->HasSwitch(
             extensions::switches::kDisableDesktopCaptureAudio);
         request_audio = !has_flag;
         break;
     }
   }
@@ skipping 163 matching lines @@
 
 void DesktopCaptureRequestsRegistry::CancelRequest(int process_id,
                                                    int request_id) {
   RequestsMap::iterator it = requests_.find(RequestId(process_id, request_id));
   if (it != requests_.end())
     it->second->Cancel();
 }
 
 
 }  // namespace extensions