Do not disable minimize animation for maximized/fullscreened exo windows

components/exo/shell_surface.cc

Index: components/exo/shell_surface.cc
diff --git a/components/exo/shell_surface.cc b/components/exo/shell_surface.cc
index ffa7d00d1871efd3253c2ce536d3e88c61f3c816..0b983c2dda090c6499253e07700876efe0d3d330 100644
--- a/components/exo/shell_surface.cc
+++ b/components/exo/shell_surface.cc
@@ -933,8 +933,12 @@ void ShellSurface::OnPreWindowStateTypeChange(
     ash::wm::WindowState* window_state,
     ash::wm::WindowStateType old_type) {
   ash::wm::WindowStateType new_type = window_state->GetStateType();
-  if (ash::wm::IsMaximizedOrFullscreenOrPinnedWindowStateType(old_type) ||
-      ash::wm::IsMaximizedOrFullscreenOrPinnedWindowStateType(new_type)) {
+  bool fromOrToMinimize = old_type == ash::wm::WINDOW_STATE_TYPE_MINIMIZED ||

[reveman, 2017/05/03 20:47:42]

nit: "bool from_or_to_minimize" but maybe a bit cleaner to early out instead.
ie.

// Comment that explains why.
if (old_type == ash::wm::WINDOW_STATE_TYPE_MINIMIZED ||
    new_type == ash::wm::WINDOW_STATE_TYPE_MINIMIZED) {
  return;
}

[oshima, 2017/05/03 21:33:16]

Done.

+      new_type == ash::wm::WINDOW_STATE_TYPE_MINIMIZED;
+
+  if (!fromOrToMinimize &&
+      (ash::wm::IsMaximizedOrFullscreenOrPinnedWindowStateType(old_type) ||
+       ash::wm::IsMaximizedOrFullscreenOrPinnedWindowStateType(new_type))) {
     // When transitioning in/out of maximized or fullscreen mode we need to
     // make sure we have a configure callback before we allow the default
     // cross-fade animations. The configure callback provides a mechanism for