Remove docked windows entirely in M59.

chrome/browser/media/webrtc/desktop_media_list_ash.cc

 // Copyright 2013 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/media/webrtc/desktop_media_list_ash.h"
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/shell.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/grit/generated_resources.h"
@@ skipping 87 matching lines @@
       }
 
       CaptureThumbnail(screen_source.id, root_windows[i]);
     }
 
     if (source_types_ & WINDOWS) {
       EnumerateWindowsForRoot(
           sources, root_windows[i], ash::kShellWindowId_DefaultContainer);
       EnumerateWindowsForRoot(
           sources, root_windows[i], ash::kShellWindowId_AlwaysOnTopContainer);
-      EnumerateWindowsForRoot(
-          sources, root_windows[i], ash::kShellWindowId_DockedContainer);
     }
   }
 }
 
 void DesktopMediaListAsh::CaptureThumbnail(content::DesktopMediaID id,
                                            aura::Window* window) {
   gfx::Rect window_rect(window->bounds().width(), window->bounds().height());
   gfx::Rect scaled_rect = media::ComputeLetterboxRegion(
       gfx::Rect(thumbnail_size_), window_rect.size());
 
@@ skipping 14 matching lines @@
 
   --pending_window_capture_requests_;
   DCHECK_GE(pending_window_capture_requests_, 0);
 
   if (!pending_window_capture_requests_) {
     // Once we've finished capturing all windows post a task for the next list
     // update.
     ScheduleNextRefresh();
   }
 }