events: Move some files into ui/base/events/

ui/base/event_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ui/base/event.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/events/event.h"
 
 #if defined(USE_X11)
 #include <X11/Xlib.h>
 #include "ui/base/x/x11_util.h"
 #endif
 
 namespace ui {
 
 TEST(EventTest, NoNativeEvent) {
   KeyEvent keyev(ET_KEY_PRESSED, VKEY_SPACE, 0);
@@ skipping 264 matching lines @@
   }
   {
     KeyEvent keyev(ET_KEY_RELEASED, VKEY_MENU, EF_ALT_DOWN);
     EXPECT_EQ(EF_ALT_DOWN, keyev.flags());
     keyev.NormalizeFlags();
     EXPECT_EQ(EF_NONE, keyev.flags());
   }
 }
 
 }  // namespace ui