chromeos: Move files in //ash/common to //ash, part 1

ash/system/palette/common_palette_tool.h

 // Copyright 2016 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 ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_COMMON_PALETTE_TOOL_H_
-#define ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_COMMON_PALETTE_TOOL_H_
+#ifndef ASH_SYSTEM_PALETTE_COMMON_PALETTE_TOOL_H_
+#define ASH_SYSTEM_PALETTE_COMMON_PALETTE_TOOL_H_
 
-#include "ash/common/system/chromeos/palette/palette_tool.h"
-#include "ash/common/system/tray/view_click_listener.h"
+#include "ash/system/palette/palette_tool.h"
+#include "ash/system/tray/view_click_listener.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 
 namespace gfx {
 struct VectorIcon;
 }
 
 namespace ash {
 
 class HoverHighlightView;
@@ skipping 24 matching lines @@
 
   // start_time_ is initialized when the tool becomes active.
   // Used for recording UMA metrics.
   base::TimeTicks start_time_;
 
   DISALLOW_COPY_AND_ASSIGN(CommonPaletteTool);
 };
 
 }  // namespace ash
 
-#endif  // ASH_COMMON_SYSTEM_CHROMEOS_PALETTE_COMMON_PALETTE_TOOL_H_
+#endif  // ASH_SYSTEM_PALETTE_COMMON_PALETTE_TOOL_H_