Fix for windows shared build compile failure.

skia/ext/convolver.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 SKIA_EXT_CONVOLVER_H_
 #define SKIA_EXT_CONVOLVER_H_
 #pragma once
 
 #include <cmath>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/cpu.h"
+#include "third_party/skia/include/core/SkTypes.h"
 
 #if defined(ARCH_CPU_X86_FAMILY)
 #if defined(__x86_64__) || defined(_M_X64) || defined(__SSE2__) || _M_IX86_FP==2
 // This is where we had compiler support for SSE2 instructions.
 #define SIMD_SSE2 1
 #endif
 #endif
 
 // avoid confusion with Mac OS X's math library (Carbon)
 #if defined(__APPLE__)
@@ skipping 11 matching lines @@
 // ConvolutionFilter1D, then convolving each column by another one.
 //
 // Entries are stored in fixed point, shifted left by kShiftBits.
 class ConvolutionFilter1D {
  public:
   typedef short Fixed;
 
   // The number of bits that fixed point values are shifted by.
   enum { kShiftBits = 14 };
 
-  ConvolutionFilter1D();
-  ~ConvolutionFilter1D();
+  SK_API ConvolutionFilter1D();
+  SK_API ~ConvolutionFilter1D();
 
   // Convert between floating point and our fixed point representation.
   static Fixed FloatToFixed(float f) {
     return static_cast<Fixed>(f * (1 << kShiftBits));
   }
   static unsigned char FixedToChar(Fixed x) {
     return static_cast<unsigned char>(x >> kShiftBits);
   }
   static float FixedToFloat(Fixed x) {
     // The cast relies on Fixed being a short, implying that on
@@ skipping 16 matching lines @@
   // the scaling factors start. The scaling factors apply to the source pixels
   // starting from this position, and going for the next |filter_length| pixels.
   //
   // You will probably want to make sure your input is normalized (that is,
   // all entries in |filter_values| sub to one) to prevent affecting the overall
   // brighness of the image.
   //
   // The filter_length must be > 0.
   //
   // This version will automatically convert your input to fixed point.
-  void AddFilter(int filter_offset,
-                 const float* filter_values,
-                 int filter_length);
+  SK_API void AddFilter(int filter_offset,
+                        const float* filter_values,
+                        int filter_length);
 
   // Same as the above version, but the input is already fixed point.
   void AddFilter(int filter_offset,
                  const Fixed* filter_values,
                  int filter_length);
 
   // Retrieves a filter for the given |value_offset|, a position in the output
   // image in the direction we're convolving. The offset and length of the
   // filter values are put into the corresponding out arguments (see AddFilter
   // above for what these mean), and a pointer to the first scaling factor is
@@ skipping 15 matching lines @@
     // Padding |padding_count| of more dummy coefficients after the coefficients
     // of last filter to prevent SIMD instructions which load 8 or 16 bytes
     // together to access invalid memory areas. We are not trying to align the
     // coefficients right now due to the opaqueness of <vector> implementation.
     // This has to be done after all |AddFilter| calls.
     for (int i = 0; i < padding_count; ++i)
       filter_values_.push_back(static_cast<Fixed>(0));
   }
 
  private:
-  struct FilterInstance {
+  struct SK_API FilterInstance {
     // Offset within filter_values for this instance of the filter.
     int data_location;
 
     // Distance from the left of the filter to the center. IN PIXELS
     int offset;
 
     // Number of values in this filter instance.
     int length;
   };
 
@@ skipping 20 matching lines @@
 // size will be xfilter.num_values() * yfilter.num_values() pixels. It will be
 // in rows of exactly xfilter.num_values() * 4 bytes.
 //
 // |source_has_alpha| is a hint that allows us to avoid doing computations on
 // the alpha channel if the image is opaque. If you don't know, set this to
 // true and it will work properly, but setting this to false will be a few
 // percent faster if you know the image is opaque.
 //
 // The layout in memory is assumed to be 4-bytes per pixel in B-G-R-A order
 // (this is ARGB when loaded into 32-bit words on a little-endian machine).
-void BGRAConvolve2D(const unsigned char* source_data,
-                    int source_byte_row_stride,
-                    bool source_has_alpha,
-                    const ConvolutionFilter1D& xfilter,
-                    const ConvolutionFilter1D& yfilter,
-                    int output_byte_row_stride,
-                    unsigned char* output,
-                    bool use_sse2);
+SK_API void BGRAConvolve2D(const unsigned char* source_data,
+                           int source_byte_row_stride,
+                           bool source_has_alpha,
+                           const ConvolutionFilter1D& xfilter,
+                           const ConvolutionFilter1D& yfilter,
+                           int output_byte_row_stride,
+                           unsigned char* output,
+                           bool use_sse2);
 }  // namespace skia
 
 #endif  // SKIA_EXT_CONVOLVER_H_