remove unneeded SK_SUPPORT_LEGACY_IMAGEFILTER_TO_COLORFILTER flag

src/core/SkCanvas.cpp

 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkCanvasPriv.h"
 #include "SkBitmapDevice.h"
@@ skipping 291 matching lines @@
 
 static SkPaint* set_if_needed(SkLazyPaint* lazy, const SkPaint& orig) {
     return lazy->isValid() ? lazy->get() : lazy->set(orig);
 }
 
 /**
  *  If the paint has an imagefilter, but it can be simplified to just a colorfilter, return that
  *  colorfilter, else return NULL.
  */
 static SkColorFilter* image_to_color_filter(const SkPaint& paint) {
-#ifdef SK_SUPPORT_LEGACY_IMAGEFILTER_TO_COLORFILTER
-    return NULL;
-#else
     SkImageFilter* imgf = paint.getImageFilter();
     if (!imgf) {
         return NULL;
     }
 
     SkColorFilter* imgCF;
     if (!imgf->asAColorFilter(&imgCF)) {
         return NULL;
     }
 
     SkColorFilter* paintCF = paint.getColorFilter();
     if (NULL == paintCF) {
         // there is no existing paint colorfilter, so we can just return the imagefilter's
         return imgCF;
     }
 
     // The paint has both a colorfilter(paintCF) and an imagefilter-which-is-a-colorfilter(imgCF)
     // and we need to combine them into a single colorfilter.
     SkAutoTUnref<SkColorFilter> autoImgCF(imgCF);
     return SkColorFilter::CreateComposeFilter(imgCF, paintCF);
-#endif
 }
 
 class AutoDrawLooper {
 public:
     AutoDrawLooper(SkCanvas* canvas, const SkSurfaceProps& props, const SkPaint& paint,
                    bool skipLayerForImageFilter = false,
                    const SkRect* bounds = NULL) : fOrigPaint(paint) {
         fCanvas = canvas;
         fFilter = canvas->getDrawFilter();
         fPaint = &fOrigPaint;
@@ skipping 2299 matching lines @@
     }
 
     if (matrix) {
         canvas->concat(*matrix);
     }
 }
 
 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
     fCanvas->restoreToCount(fSaveCount);
 }