Aura desktop: Really implement DesktopActivationClient::OnWillFocusWi…

…ndow().

This keeps the skyline focused during tab switching and fixes a shutdown
crasher.

BUG=125106
TEST=none


Review URL: http://codereview.chromium.org/10378002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@135260 0039d316-1c4b-4281-b951-d872f2087c98

ui/aura/desktop/desktop_activation_client.cc

@@ -66,8 +66,7 @@ aura::Window* DesktopActivationClient::GetActiveWindow() {
 
 bool DesktopActivationClient::OnWillFocusWindow(Window* window,
                                                 const Event* event) {
-  // TODO(erg): Is this OK? Logic is much more nuanced in ash.
-  return true;
+  return CanActivateWindow(window);
 }
 
 void DesktopActivationClient::OnWindowFocused(aura::Window* window) {