Aura: Switch window mode when screen resolution changes

ash/wm/root_window_layout_manager.cc

Index: ash/wm/root_window_layout_manager.cc
diff --git a/ash/wm/root_window_layout_manager.cc b/ash/wm/root_window_layout_manager.cc
index 53af79118c7b1e3e03ad94ff3a996e1f043f833f..55acb162935ae4dc5fd6245530b0f49c20484850 100644
--- a/ash/wm/root_window_layout_manager.cc
+++ b/ash/wm/root_window_layout_manager.cc
@@ -4,6 +4,7 @@
 
 #include "ash/wm/root_window_layout_manager.h"
 
+#include "ash/shell.h"
 #include "ui/aura/window.h"
 #include "ui/views/widget/widget.h"
 
@@ -36,6 +37,10 @@ void RootWindowLayoutManager::OnWindowResized() {
   gfx::Rect fullscreen_bounds =
       gfx::Rect(owner_->bounds().width(), owner_->bounds().height());
 
+  // Change window mode before setting bounds on children so the children will
+  // resize to fit the new workspace area.
+  Shell::GetInstance()->SetWindowModeForMonitorSize(fullscreen_bounds.size());
+
   aura::Window::Windows::const_iterator i;
   for (i = owner_->children().begin(); i != owner_->children().end(); ++i)
     (*i)->SetBounds(fullscreen_bounds);