Add #include <algorithm> to code that is missing it.

Source/platform/graphics/Gradient.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 16 matching lines @@
 
 #include "config.h"
 #include "platform/graphics/Gradient.h"
 
 #include "platform/geometry/FloatRect.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/skia/SkiaUtils.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkShader.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
+#include <algorithm>
 
 typedef Vector<SkScalar, 8> ColorStopOffsetVector;
 typedef Vector<SkColor, 8> ColorStopColorVector;
 
 namespace blink {
 
 Gradient::Gradient(const FloatPoint& p0, const FloatPoint& p1)
     : m_p0(p0)
     , m_p1(p1)
     , m_r0(0)
@@ skipping 201 matching lines @@
     }
 
     if (!m_gradient) {
         // use last color, since our "geometry" was degenerate (e.g. radius==0)
         m_gradient = adoptRef(SkShader::CreateColorShader(colors[countUsed - 1]));
     }
     return m_gradient.get();
 }
 
 } // namespace blink