split SkPictureRecorder out of SkPicture

https://codereview.chromium.org/214953003/



git-svn-id: http://skia.googlecode.com/svn/trunk@14171 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/pathopsskpclip.cpp b/gm/pathopsskpclip.cpp
index b85b294..0d93698 100644
--- a/gm/pathopsskpclip.cpp
+++ b/gm/pathopsskpclip.cpp
@@ -32,8 +32,8 @@
     }
 
     virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
-        SkPicture* pict = SkNEW(SkPicture);
-        SkCanvas* rec = pict->beginRecording(1200, 900);
+        SkPictureRecorder recorder;
+        SkCanvas* rec = recorder.beginRecording(1200, 900);
         SkPath p;
         SkRect r = {
             SkIntToScalar(100),
@@ -46,7 +46,7 @@
         rec->translate(SkIntToScalar(250), SkIntToScalar(250));
         rec->clipPath(p, SkRegion::kIntersect_Op, true);
         rec->drawColor(0xffff0000);
-        pict->endRecording();
+        SkAutoTUnref<SkPicture> pict(recorder.endRecording());
 
         canvas->setAllowSimplifyClip(true);
         canvas->save();
@@ -58,7 +58,6 @@
         canvas->translate(SkIntToScalar(1200 / 2), 0);
         canvas->drawPicture(*pict);
         canvas->restore();
-        SkSafeUnref(pict);
     }
 
 private: