Convert //ash from scoped_ptr to std::unique_ptr

ash/autoclick/autoclick_unittest.cc

Index: ash/autoclick/autoclick_unittest.cc
diff --git a/ash/autoclick/autoclick_unittest.cc b/ash/autoclick/autoclick_unittest.cc
index ff66e04fc1518a45bc52053274715c38d1ddb2c3..d824bd990f02839df9b821263dcaea6cbaf1a083 100644
--- a/ash/autoclick/autoclick_unittest.cc
+++ b/ash/autoclick/autoclick_unittest.cc
@@ -280,7 +280,7 @@ TEST_F(AutoclickTest, SynthesizedMouseMovesIgnored) {
   // result, synthesized mouse events will be dispatched to the window, but it
   // should not trigger an autoclick.
   aura::test::EventCountDelegate delegate;
-  scoped_ptr<aura::Window> window(CreateTestWindowInShellWithDelegate(
+  std::unique_ptr<aura::Window> window(CreateTestWindowInShellWithDelegate(
       &delegate, 123, gfx::Rect(50, 50, 100, 100)));
   window->Show();
   events = WaitForMouseEvents();