Remove docked windows entirely in M59.

chrome/browser/media/webrtc/desktop_media_list_ash.cc

Index: chrome/browser/media/webrtc/desktop_media_list_ash.cc
diff --git a/chrome/browser/media/webrtc/desktop_media_list_ash.cc b/chrome/browser/media/webrtc/desktop_media_list_ash.cc
index 6f41f56656368302d1a2dc53da3cc269860090ff..b03d1086dca18fb72b2a64d0b3666c18b291b739 100644
--- a/chrome/browser/media/webrtc/desktop_media_list_ash.cc
+++ b/chrome/browser/media/webrtc/desktop_media_list_ash.cc
@@ -105,8 +105,6 @@ void DesktopMediaListAsh::EnumerateSources(
           sources, root_windows[i], ash::kShellWindowId_DefaultContainer);
       EnumerateWindowsForRoot(
           sources, root_windows[i], ash::kShellWindowId_AlwaysOnTopContainer);
-      EnumerateWindowsForRoot(
-          sources, root_windows[i], ash::kShellWindowId_DockedContainer);
     }
   }
 }