Introduce ui.dll / libui.so for the component build.

ui/base/text/bytes_formatting.h

 // Copyright (c) 2011 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_BASE_TEXT_BYTES_FORMATTING_H_
 #define UI_BASE_TEXT_BYTES_FORMATTING_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/string16.h"
+#include "ui/ui_api.h"
 
 namespace ui {
 
 // Simple API ------------------------------------------------------------------
 
 // Simple call to return a byte quantity as a string in human-readable format.
 // Ex: FormatBytes(512) => "512 B"
 // Ex: FormatBytes(101479) => "99.1 kB"
-string16 FormatBytes(int64 bytes);
+UI_API string16 FormatBytes(int64 bytes);
 
 // Simple call to return a speed as a string in human-readable format.
 // Ex: FormatSpeed(512) => "512 B/s"
 // Ex: FormatSpeed(101479) => "99.1 kB/s"
-string16 FormatSpeed(int64 bytes);
+UI_API string16 FormatSpeed(int64 bytes);
 
 // Less-Simple API -------------------------------------------------------------
 
 enum DataUnits {
   DATA_UNITS_BYTE = 0,
   DATA_UNITS_KIBIBYTE,
   DATA_UNITS_MEBIBYTE,
   DATA_UNITS_GIBIBYTE,
   DATA_UNITS_TEBIBYTE,
   DATA_UNITS_PEBIBYTE
 };
 
 // Return the unit type that is appropriate for displaying the amount of bytes
 // passed in. Most of the time, an explicit call to this isn't necessary; just
 // use FormatBytes()/FormatSpeed() above.
-DataUnits GetByteDisplayUnits(int64 bytes);
+UI_API DataUnits GetByteDisplayUnits(int64 bytes);
 
 // Return a byte quantity as a string in human-readable format with an optional
 // unit suffix. Specify in the |units| argument the units to be used.
 // Ex: FormatBytes(512, DATA_UNITS_KIBIBYTE, true) => "0.5 kB"
 // Ex: FormatBytes(10*1024, DATA_UNITS_MEBIBYTE, false) => "0.1"
-string16 FormatBytesWithUnits(int64 bytes, DataUnits units, bool show_units);
+UI_API string16 FormatBytesWithUnits(int64 bytes, DataUnits units,
+                                          bool show_units);
 
 // As above, but with "/s" units for speed values.
 // Ex: FormatSpeed(512, DATA_UNITS_KIBIBYTE, true) => "0.5 kB/s"
 // Ex: FormatSpeed(10*1024, DATA_UNITS_MEBIBYTE, false) => "0.1"
 string16 FormatSpeedWithUnits(int64 bytes, DataUnits units, bool show_units);
 
 }  // namespace ui
 
 #endif  // UI_BASE_TEXT_BYTES_FORMATTING_H_