add pipecanvas

src/pipe/SkPipeCanvas.h

Index: src/pipe/SkPipeCanvas.h
diff --git a/include/utils/SkNWayCanvas.h b/src/pipe/SkPipeCanvas.h
similarity index 84%
copy from include/utils/SkNWayCanvas.h
copy to src/pipe/SkPipeCanvas.h
index a4b9c594122e6d1a51e46c4f77d9db67a245fa5d..877ab6025b2aa366f903e0a94400e611b89edfe1 100644
--- a/include/utils/SkNWayCanvas.h
+++ b/src/pipe/SkPipeCanvas.h
@@ -1,36 +1,22 @@
-
 /*
- * Copyright 2011 Google Inc.
+ * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#ifndef SkNWayCanvas_DEFINED
-#define SkNWayCanvas_DEFINED
+#ifndef SkPipeCanvas_DEFINED
+#define SkPipeCanvas_DEFINED
 
-#include "../private/SkTDArray.h"
 #include "SkCanvas.h"
+#include "SkWriteBuffer.h"
 
-class SK_API SkNWayCanvas : public SkCanvas {
+class SkPipeCanvas : public SkCanvas {
 public:
-    SkNWayCanvas(int width, int height);
-    virtual ~SkNWayCanvas();
-
-    virtual void addCanvas(SkCanvas*);
-    virtual void removeCanvas(SkCanvas*);
-    virtual void removeAll();
-
-    ///////////////////////////////////////////////////////////////////////////
-    // These are forwarded to the N canvases we're referencing
-
-#ifdef SK_SUPPORT_LEGACY_DRAWFILTER
-    SkDrawFilter* setDrawFilter(SkDrawFilter*) override;
-#endif
+    SkPipeCanvas(int width, int height, SkWStream*);
+    ~SkPipeCanvas() override;
 
 protected:
-    SkTDArray<SkCanvas*> fList;
-
     void willSave() override;
     SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec&) override;
     void willRestore() override;
@@ -64,11 +50,13 @@ protected:
     void onDrawBitmap(const SkBitmap&, SkScalar left, SkScalar top, const SkPaint*) override;
     void onDrawBitmapRect(const SkBitmap&, const SkRect* src, const SkRect& dst, const SkPaint*,
                           SrcRectConstraint) override;
+    void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
+                          const SkPaint*) override;
     void onDrawImage(const SkImage*, SkScalar left, SkScalar top, const SkPaint*) override;
     void onDrawImageRect(const SkImage*, const SkRect* src, const SkRect& dst,
                          const SkPaint*, SrcRectConstraint) override;
-    void onDrawBitmapNine(const SkBitmap&, const SkIRect& center, const SkRect& dst,
-                          const SkPaint*) override;
+    void onDrawImageNine(const SkImage*, const SkIRect& center, const SkRect& dst,
+                         const SkPaint*) override;
     void onDrawVertices(VertexMode vmode, int vertexCount,
                               const SkPoint vertices[], const SkPoint texs[],
                               const SkColor colors[], SkXfermode* xmode,
@@ -83,9 +71,11 @@ protected:
     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;
     void onDrawAnnotation(const SkRect&, const char[], SkData*) override;
 
-    class Iter;
-
 private:
+    void writeVerb(int);
+
+    SkWStream* fStream;
+
     typedef SkCanvas INHERITED;
 };