Use active window if on current workspace for fullscreen mode.

ash/wm/overview/window_selector.cc

Index: ash/wm/overview/window_selector.cc
diff --git a/ash/wm/overview/window_selector.cc b/ash/wm/overview/window_selector.cc
index aa351856a5a66dd93da76fcd433df29a40709768..e3828fdc73e24ac50b6a151ec56bde8fcb7b8633 100644
--- a/ash/wm/overview/window_selector.cc
+++ b/ash/wm/overview/window_selector.cc
@@ -386,6 +386,11 @@ void WindowSelector::SelectWindow(aura::Window* window) {
   // The selected window should not be minimized when window selection is
   // ended.
   (*iter)->RestoreWindowOnExit(window);
+  // The selected window will be activated, this activation should be ignored.
+  // After selecting the window, this object will be deleted so we just set
+  // ignore_activations_ rather than using AutoReset which would attempt to
+  // change the value back after deleting this WindowSelector.
+  ignore_activations_ = true;
   delegate_->OnWindowSelected(window);
 }