allow imagefilter to manage CTM decomposition

include/effects/SkColorFilterImageFilter.h

 /*
  * Copyright 2012 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.
  */
 
 #ifndef SkColorFilterImageFilter_DEFINED
 #define SkColorFilterImageFilter_DEFINED
 
@@ skipping 18 matching lines @@
                     sk_ref_sp<SkImageFilter>(input),
                     cropRect).release();
     }
 #endif
 
 protected:
     void flatten(SkWriteBuffer&) const override;
     sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
                                         SkIPoint* offset) const override;
     bool onIsColorFilterNode(SkColorFilter**) const override;
+    bool onCanHandleAffine() const override;
     bool affectsTransparentBlack() const override;
 
 private:
     SkColorFilterImageFilter(sk_sp<SkColorFilter> cf,
                              sk_sp<SkImageFilter> input,
                              const CropRect* cropRect);
 
     sk_sp<SkColorFilter> fColorFilter;
 
     typedef SkImageFilter INHERITED;
 };
 
 #endif