Remove the single-sigma version of SkDropShadowImageFilter::Create().

src/effects/SkDropShadowImageFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDropShadowImageFilter.h"
 
 #include "SkBitmap.h"
 #include "SkBlurImageFilter.h"
 #include "SkCanvas.h"
 #include "SkColorMatrixFilter.h"
 #include "SkDevice.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 
-SkDropShadowImageFilter::SkDropShadowImageFilter(SkScalar dx, SkScalar dy, SkScalar sigma,
-                                                 SkColor color, SkImageFilter* input)
-    : INHERITED(1, &input)
-    , fDx(dx)
-    , fDy(dy)
-    , fSigmaX(sigma)
-    , fSigmaY(sigma)
-    , fColor(color)
-{
-}
-
 SkDropShadowImageFilter::SkDropShadowImageFilter(SkScalar dx, SkScalar dy,
                                                  SkScalar sigmaX, SkScalar sigmaY, SkColor color,
                                                  SkImageFilter* input, const CropRect* cropRect)
     : INHERITED(1, &input, cropRect)
     , fDx(dx)
     , fDy(dy)
     , fSigmaX(sigmaX)
     , fSigmaY(sigmaY)
     , fColor(color)
 {
@@ skipping 90 matching lines @@
     bounds.offset(-SkScalarCeilToInt(offsetVec.x()),
                   -SkScalarCeilToInt(offsetVec.y()));
     SkVector sigma = SkVector::Make(fSigmaX, fSigmaY);
     ctm.mapVectors(&sigma, 1);
     bounds.outset(SkScalarCeilToInt(SkScalarMul(sigma.x(), SkIntToScalar(3))),
                   SkScalarCeilToInt(SkScalarMul(sigma.y(), SkIntToScalar(3))));
     bounds.join(src);
     *dst = bounds;
     return true;
 }