Allow to create ARC++ windows minimized on startup.

components/exo/shell_surface_unittest.cc

Index: components/exo/shell_surface_unittest.cc
diff --git a/components/exo/shell_surface_unittest.cc b/components/exo/shell_surface_unittest.cc
index 575dafc6d6f9d26540c2bc94ec67a8651d594d87..8675fa25ead70bff01f2e7d8ac33f56c793186c2 100644
--- a/components/exo/shell_surface_unittest.cc
+++ b/components/exo/shell_surface_unittest.cc
@@ -126,6 +126,11 @@ TEST_F(ShellSurfaceTest, Minimize) {
   std::unique_ptr<Surface> surface(new Surface);
   std::unique_ptr<ShellSurface> shell_surface(new ShellSurface(surface.get()));
 
+  // Minimizing can be performed before the surface is committed.
+  shell_surface->Minimize();
+  EXPECT_TRUE(shell_surface->GetWidget()->IsMinimized());
+
+  // Confirm that attaching and commiting doesn't reset the state.
   surface->Attach(buffer.get());
   surface->Commit();
   shell_surface->Minimize();