Ensure that the first browser window which is created in Windows 8 ASH is maximized.

ash/wm/window_positioner_unittest.cc

Index: ash/wm/window_positioner_unittest.cc
===================================================================
--- ash/wm/window_positioner_unittest.cc	(revision 234596)
+++ ash/wm/window_positioner_unittest.cc	(working copy)
@@ -44,8 +44,12 @@
   views::Widget* widget =
       shell::ToplevelWindow::CreateToplevelWindow(params);
   gfx::Rect bounds = widget->GetWindowBoundsInScreen();
+#if defined(OS_WIN)
+  EXPECT_TRUE(widget->IsMaximized());
+#else
   // The window should be in the 2nd display with the default size.
   EXPECT_EQ("300x300", bounds.size().ToString());
+#endif
   EXPECT_TRUE(Shell::GetScreen()->GetDisplayNearestWindow(
       second_root_window).bounds().Contains(bounds));
 }