add parallel public API for recording SkLiteDL.

include/core/SkPictureRecorder.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPictureRecorder_DEFINED
 #define SkPictureRecorder_DEFINED
 
@@ skipping 122 matching lines @@
     SkAutoTUnref<SkBBoxHierarchy> fBBH;
     SkAutoTUnref<SkRecorder>      fRecorder;
     SkAutoTUnref<SkRecord>        fRecord;
     SkMiniRecorder                fMiniRecorder;
 
     GrContext*                    fGrContextToOptimizeFor = nullptr;
 
     typedef SkNoncopyable INHERITED;
 };
 
+class SkLiteDL;

[reed1, 2016/08/15 15:52:51]

Perhaps we can make this a separate file for now, so it stays more hidden until
it is baked.

+class SkLiteRecorder;
+
+// A similar API to SkPictureRecorder, wrapping SkLiteRecorder and SkLiteDL.
+class SK_API SkPictureRecorder_Lite : SkNoncopyable {
+public:
+     SkPictureRecorder_Lite();
+    ~SkPictureRecorder_Lite();
+
+    SkCanvas* beginRecording(const SkRect& bounds);
+    SkCanvas* beginRecording(SkScalar w, SkScalar h) {
+        return this->beginRecording(SkRect::MakeWH(w,h));
+    }
+
+    SkCanvas* getRecordingCanvas();
+
+    void optimizeFor(GrContext* ctx) { fGrContextToOptimizeFor = ctx; }
+
+    sk_sp<SkDrawable> finishRecordingAsDrawable(uint32_t ignored = 0);

[djsollen, 2016/08/15 14:47:43]

will this return a nullptr if there were no drawing ops?

+
+private:
+    std::unique_ptr<SkLiteRecorder> fRecorder;
+    sk_sp<SkLiteDL>                 fDL;
+    GrContext*                      fGrContextToOptimizeFor = nullptr;
+};
+
 #endif