Make browser windows override_redirect when dragging tabs.

chrome/browser/ui/browser.cc

Index: chrome/browser/ui/browser.cc
diff --git a/chrome/browser/ui/browser.cc b/chrome/browser/ui/browser.cc
index 72b0ce39095ed78ee8473b798750e3e460c0f5a4..39ba24ff1e690591fffa8d7e053997ebbca9de10 100644
--- a/chrome/browser/ui/browser.cc
+++ b/chrome/browser/ui/browser.cc
@@ -360,6 +360,7 @@ Browser::Browser(const CreateParams& params)
       bookmark_bar_state_(BookmarkBar::HIDDEN),
       command_controller_(new chrome::BrowserCommandController(this)),
       window_has_shown_(false),
+      is_being_dragged_(params.is_being_dragged),

[Daniel Erat, 2016/01/19 20:36:22]

this presumably won't compile anywhere but on desktop linux, right? rather than
adding a similar ifdef here, i think it'd be better to remove the ifdefs from
the header -- i think it's fine for other platforms to have this member, even if
they don't actually need to use it.

[stapelberg, 2016/01/20 13:31:09]

Done.

       chrome_updater_factory_(this),
       weak_factory_(this) {
   // If this causes a crash then a window is being opened using a profile type