Split ui/display types into separate module and have Ozone depend on it

ui/display/chromeos/test/test_display_snapshot.h

 // Copyright 2014 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.
 
 #ifndef UI_DISPLAY_CHROMEOS_TEST_TEST_DISPLAY_SNAPSHOT_H_
 #define UI_DISPLAY_CHROMEOS_TEST_TEST_DISPLAY_SNAPSHOT_H_
 
-#include "ui/display/chromeos/display_snapshot.h"
+#include "ui/display/display_export.h"
+#include "ui/display/types/chromeos/display_snapshot.h"
 
 namespace ui {
 
 class DISPLAY_EXPORT TestDisplaySnapshot : public DisplaySnapshot {
  public:
   TestDisplaySnapshot();
   TestDisplaySnapshot(int64_t display_id,
                       bool has_proper_display_id,
                       const gfx::Point& origin,
                       const gfx::Size& physical_size,
@@ skipping 21 matching lines @@
   // DisplaySnapshot overrides:
   virtual std::string ToString() const OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestDisplaySnapshot);
 };
 
 }  // namespace ui
 
 #endif  // UI_DISPLAY_CHROMEOS_TEST_TEST_DISPLAY_SNAPSHOT_H_