Add default ctor to SkMask

src/effects/SkBlurMask.h

 /*
  * Copyright 2006 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 SkBlurMask_DEFINED
 #define SkBlurMask_DEFINED
 
@@ skipping 12 matching lines @@
                          SkIPoint *margin = nullptr,
                          SkMask::CreateMode createMode =
                                                 SkMask::kComputeBoundsAndRenderImage_CreateMode);
 
     // forceQuality will prevent BoxBlur from falling back to the low quality approach when sigma
     // is very small -- this can be used predict the margin bump ahead of time without completely
     // replicating the internal logic.  This permits not only simpler caching of blurred results,
     // but also being able to predict precisely at what pixels the blurred profile of e.g. a
     // rectangle will lie.
 
     static bool BoxBlur(SkMask* dst, const SkMask& src,

[reed1, 2015/12/17 18:50:31]

Lets add SK_WARN_UNUSED_RESULT

bool SK_WARN_UNUSED_RESULT BoxBlur(...)

                         SkScalar sigma, SkBlurStyle style, SkBlurQuality quality,
-                        SkIPoint* margin = nullptr, bool force_quality=false);
+                        SkIPoint* margin = nullptr, bool forceQuality = false);
 
     // the "ground truth" blur does a gaussian convolution; it's slow
     // but useful for comparison purposes.
     static bool BlurGroundTruth(SkScalar sigma, SkMask* dst, const SkMask& src, SkBlurStyle,
                                 SkIPoint* margin = nullptr);
 
     // If radius > 0, return the corresponding sigma, else return 0
     static SkScalar ConvertRadiusToSigma(SkScalar radius);
     // If sigma > 0.5, return the corresponding radius, else return 0
     static SkScalar ConvertSigmaToRadius(SkScalar sigma);
@@ skipping 27 matching lines @@
     */
 
     static void ComputeBlurredScanline(uint8_t* pixels, const uint8_t* profile,
                                        unsigned int width, SkScalar sigma);
 
 
 
 };
 
 #endif