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

ui/gfx/color_analysis.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_GFX_COLOR_ANALYSIS_H_
 #define UI_GFX_COLOR_ANALYSIS_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/ref_counted_memory.h"
 #include "third_party/skia/include/core/SkColor.h"
+#include "ui/ui_api.h"
 
 namespace color_utils {
 
 // This class exposes the sampling method to the caller, which allows
 // stubbing out for things like unit tests. Might be useful to pass more
 // arguments into the GetSample method in the future (such as which
 // cluster is being worked on, etc.).
-class KMeanImageSampler {
+class UI_API KMeanImageSampler {
  public:
   virtual int GetSample(int width, int height) = 0;
 
  protected:
   KMeanImageSampler();
   virtual ~KMeanImageSampler();
 };
 
 // This sampler will pick a random pixel as a sample centroid.
 class RandomSampler : public KMeanImageSampler {
   public:
    RandomSampler();
    virtual ~RandomSampler();
 
    virtual int GetSample(int width, int height) OVERRIDE;
 };
 
 // This sampler will pick pixels from an evenly spaced grid.
-class GridSampler : public KMeanImageSampler {
+class UI_API GridSampler : public KMeanImageSampler {
   public:
    GridSampler();
    virtual ~GridSampler();
 
    virtual int GetSample(int width, int height) OVERRIDE;
 
   private:
    // The number of times GetSample has been called.
    int calls_;
 };
@@ skipping 44 matching lines @@
 //   this cluster).
 // 6.Going through the sorted list of clusters, pick the first cluster with the
 //   largest weight that's centroid fulfills the equation
 //   |darkness_limit| < SUM(R, G, B) < |brightness_limit|. Return that color.
 //   If no color fulfills that requirement return the color with the largest
 //   weight regardless of whether or not it fulfills the equation above.
 SkColor CalculateKMeanColorOfPNG(scoped_refptr<RefCountedMemory> png,
                                  uint32_t darkness_limit,
                                  uint32_t brightness_limit);
 
-SkColor CalculateKMeanColorOfPNG(scoped_refptr<RefCountedMemory> png,
-                                 uint32_t darkness_limit,
-                                 uint32_t brightness_limit,
-                                 KMeanImageSampler& sampler);
+UI_API SkColor CalculateKMeanColorOfPNG(scoped_refptr<RefCountedMemory> png,
+                                        uint32_t darkness_limit,
+                                        uint32_t brightness_limit,
+                                        KMeanImageSampler& sampler);
 
 }  // namespace color_utils
 
 #endif  // UI_GFX_COLOR_ANALYSIS_H_