revert humper changes

https://skia.googlesource.com/skia.git/+/24e91ba3029a3a1fb60cab3ae4e68c3c44776f25

https://skia.googlesource.com/skia.git/+/a36c78240e14aeb130a97c43f3992ea19696b929

NOTREECHECKS=true

BUG=skia:
R=caryclark@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/256803011

git-svn-id: http://skia.googlecode.com/svn/trunk@14414 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/SkBlurMask.h b/src/effects/SkBlurMask.h
index 1600960..f5c9f1d 100644
--- a/src/effects/SkBlurMask.h
+++ b/src/effects/SkBlurMask.h
@@ -23,16 +23,9 @@
                          SkIPoint *margin = NULL,
                          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,
                         SkScalar sigma, SkBlurStyle style, SkBlurQuality quality,
-                        SkIPoint* margin = NULL, bool forceQuality = false);
+                        SkIPoint* margin = NULL);
 
     // the "ground truth" blur does a gaussian convolution; it's slow
     // but useful for comparison purposes.