separate c headers

tests/CTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
+#include "sk_canvas.h"
+#include "sk_paint.h"
 #include "sk_surface.h"
+
 #include "Test.h"
 
 static void test_c(skiatest::Reporter* reporter) {
     sk_colortype_t ct = sk_colortype_get_default_8888();
 
     sk_imageinfo_t info = {
         1, 1, ct, PREMUL_SK_ALPHATYPE
     };
     uint32_t pixel[1] = { 0 };
 
     sk_surface_t* surface = sk_surface_new_raster_direct(&info, pixel, sizeof(uint32_t));
     sk_paint_t* paint = sk_paint_new();
 
     sk_canvas_t* canvas = sk_surface_get_canvas(surface);
     sk_canvas_draw_paint(canvas, paint);
     REPORTER_ASSERT(reporter, 0xFF000000 == pixel[0]);
 
     sk_paint_set_color(paint, sk_color_set_argb(0xFF, 0xFF, 0xFF, 0xFF));
     sk_canvas_draw_paint(canvas, paint);
     REPORTER_ASSERT(reporter, 0xFFFFFFFF == pixel[0]);
 
     sk_paint_delete(paint);
     sk_surface_delete(surface);
 }
 
 DEF_TEST(C_API, reporter) {
     test_c(reporter);
 }