Revert "remove SK_SUPPORT_LEGACY_CLIP_REGIONOPS"

This reverts commit 8e7432b7f98dd592e529a0c8bb038d73ebfb0478.

Reason for revert: <INSERT REASONING HERE>

external/skia/bench/../tools/android/SkAndroidSDKCanvas.h:103:36: error: C++ requires a type specifier for all declarations
    void onClipRect(const SkRect&, ClipOp, ClipEdgeStyle) override;

Original change's description:
> remove SK_SUPPORT_LEGACY_CLIP_REGIONOPS
> 
> 
> switch over to SkClipOps now that SK_SUPPORT_LEGACY_CLIP_REGIONOPS is gone
> 
> BUG=skia:
> 
> Change-Id: Ifdc8b3746d508348a40cc009a4e529a1cb3c405d
> Reviewed-on: https://skia-review.googlesource.com/5714
> Commit-Queue: Mike Reed <reed@google.com>
> Reviewed-by: Mike Reed <reed@google.com>
> 

TBR=reed@google.com,reviews@skia.org
BUG=skia:
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: If26ea91d7464615e43c1d3d2f726e337ff56b55c
Reviewed-on: https://skia-review.googlesource.com/5721
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
diff --git a/src/utils/SkCanvasStack.cpp b/src/utils/SkCanvasStack.cpp
index 48cc258..8e4bd37 100644
--- a/src/utils/SkCanvasStack.cpp
+++ b/src/utils/SkCanvasStack.cpp
@@ -77,22 +77,22 @@
     this->SkCanvas::didSetMatrix(matrix);
 }
 
-void SkCanvasStack::onClipRect(const SkRect& r, SkClipOp op, ClipEdgeStyle edgeStyle) {
+void SkCanvasStack::onClipRect(const SkRect& r, ClipOp op, ClipEdgeStyle edgeStyle) {
     this->INHERITED::onClipRect(r, op, edgeStyle);
     this->clipToZOrderedBounds();
 }
 
-void SkCanvasStack::onClipRRect(const SkRRect& rr, SkClipOp op, ClipEdgeStyle edgeStyle) {
+void SkCanvasStack::onClipRRect(const SkRRect& rr, ClipOp op, ClipEdgeStyle edgeStyle) {
     this->INHERITED::onClipRRect(rr, op, edgeStyle);
     this->clipToZOrderedBounds();
 }
 
-void SkCanvasStack::onClipPath(const SkPath& p, SkClipOp op, ClipEdgeStyle edgeStyle) {
+void SkCanvasStack::onClipPath(const SkPath& p, ClipOp op, ClipEdgeStyle edgeStyle) {
     this->INHERITED::onClipPath(p, op, edgeStyle);
     this->clipToZOrderedBounds();
 }
 
-void SkCanvasStack::onClipRegion(const SkRegion& deviceRgn, SkClipOp op) {
+void SkCanvasStack::onClipRegion(const SkRegion& deviceRgn, ClipOp op) {
     SkASSERT(fList.count() == fCanvasData.count());
     for (int i = 0; i < fList.count(); ++i) {
         SkRegion tempRegion;