Revert of switch colorfilters to sk_sp

src/pdf/SkPDFDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPDFDevice.h"
 
 #include "SkAnnotationKeys.h"
@@ skipping 2096 matching lines @@
         fFontResources.push(newFont.get());
         newFont.get()->ref();
     }
     return resourceIndex;
 }
 
 static SkSize rect_to_size(const SkRect& r) {
     return SkSize::Make(r.width(), r.height());
 }
 
-static const SkImage* color_filter(const SkImage* image, SkColorFilter* colorFilter) {
+static const SkImage* color_filter(const SkImage* image,
+                                   SkColorFilter* colorFilter) {
     sk_sp<SkSurface> surface(SkSurface::NewRaster(
             SkImageInfo::MakeN32Premul(image->dimensions())));
     if (!surface) {
         return image;
     }
     SkCanvas* canvas = surface->getCanvas();
     canvas->clear(SK_ColorTRANSPARENT);
     SkPaint paint;
-    paint.setColorFilter(sk_ref_sp(colorFilter));
+    paint.setColorFilter(colorFilter);
     canvas->drawImage(image, 0, 0, &paint);
     canvas->flush();
     return surface->makeImageSnapshot().release();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 void SkPDFDevice::internalDrawImage(const SkMatrix& origMatrix,
                                     const SkClipStack* clipStack,
                                     const SkRegion& origClipRegion,
                                     const SkImage* image,
@@ skipping 137 matching lines @@
         sk_sp<SkData> encodedImage(image->refEncodedData());
         if (!encodedImage) {
             fDocument->serialize(pdfimage);
         }
         #endif
         fDocument->canon()->addPDFBitmap(image->uniqueID(), pdfimage.get());
     }
     SkPDFUtils::DrawFormXObject(this->addXObjectResource(pdfimage.get()),
                                 &content.entry()->fContent);
 }