remove 'deprecated' region from SkDraw

src/pdf/SkPDFCanvas.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkNinePatchIter.h"
 #include "SkPDFCanvas.h"
 #include "SkPDFDevice.h"
 
 SkPDFCanvas::SkPDFCanvas(const sk_sp<SkPDFDevice>& dev)
     : SkCanvas(dev.get()) {}
 
 SkPDFCanvas::~SkPDFCanvas() {}
 
+/*
+ *  PDF's impl sometimes wants to access the raster clip as a SkRegion. To keep this valid,
+ *  we intercept all clip calls to ensure that the clip stays BW (i.e. never antialiased), since
+ *  an antialiased clip won't build a SkRegion (it builds SkAAClip).
+ */
+void SkPDFCanvas::onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
+    this->INHERITED::onClipRect(rect, op, kHard_ClipEdgeStyle);
+}
+
+void SkPDFCanvas::onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
+    this->INHERITED::onClipRRect(rrect, op, kHard_ClipEdgeStyle);
+}
+
+void SkPDFCanvas::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
+    this->INHERITED::onClipPath(path, op, kHard_ClipEdgeStyle);
+}
+
 void SkPDFCanvas::onDrawBitmapNine(const SkBitmap& bitmap,
                                    const SkIRect& center,
                                    const SkRect& dst,
                                    const SkPaint* paint) {
     SkNinePatchIter iter(bitmap.width(), bitmap.height(), center, dst);
     SkRect srcR, dstR;
     while (iter.next(&srcR, &dstR)) {
         this->drawBitmapRect(bitmap, srcR, dstR, paint);
     }
 }
@@ skipping 33 matching lines @@
     SkRect bounds = SkRect::Make(bitmap.bounds());
     SkRect src = srcPtr ? *srcPtr : bounds;
     SkAutoCanvasRestore autoCanvasRestore(this, true);
     if (src != bounds) {
         this->clipRect(dst);
     }
     this->concat(SkMatrix::MakeRectToRect(src, dst,
                                  SkMatrix::kFill_ScaleToFit));
     this->drawBitmap(bitmap, 0, 0, paint);
 }