Avoids releasing capture prematurily when dragging tabs from one to another browser window

ui/views/widget/desktop_aura/x11_desktop_handler.cc

Index: ui/views/widget/desktop_aura/x11_desktop_handler.cc
diff --git a/ui/views/widget/desktop_aura/x11_desktop_handler.cc b/ui/views/widget/desktop_aura/x11_desktop_handler.cc
index d98dfa644354d2590d7e42c20e4eb52eaa68fdd2..66da0600ee47883b84f2516f6dc211dd25d61ed3 100644
--- a/ui/views/widget/desktop_aura/x11_desktop_handler.cc
+++ b/ui/views/widget/desktop_aura/x11_desktop_handler.cc
@@ -92,9 +92,10 @@ void X11DesktopHandler::ActivateWindow(::Window window) {
     // the X server to do that. Note that the call will raise an X error if the
     // window is not mapped.
     XSetInputFocus(xdisplay_, window, RevertToParent, CurrentTime);
-
-    OnActiveWindowChanged(window);
   }
+  // Notify synchronously in order to maintain focus on a correct view when
+  // activation changes.
+  OnActiveWindowChanged(window);

[varkha, 2014/02/26 20:30:18]

Without this when a tab that is dragged from one browser to another has focus in
a text field that focus gets lost after the drag. Calling it synchronously helps
and focus is maintained (avoiding symptoms from http://crbug.com/275329. Is
there a better way?

[Elliot Glaysher, 2014/02/26 20:33:17]

Not that I know of. sadrul@ might be a better person to ask though, since he has
more in depth knowledge of X11 lore.

 }
 
 void X11DesktopHandler::DeactivateWindow(::Window window) {