Create GrDraw and start fast pathing src over rects

src/gpu/draws/GrDrawRect.h

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrDrawRect_DEFINED
+#define GrDrawRect_DEFINED
+
+#include "GrDraw.h"
+
+class GrClip;
+class GrContext;
+class GrDrawContext;
+class GrRenderTarget;
+class GrStrokeInfo;
+class SkMatrix;
+class SkPaint;
+struct SkRect;
+
+class GrDrawRect : public GrDraw {
+public:
+    GrDrawRect(GrRenderTarget* rt,
+               GrContext* context,
+               const GrClip& clip,
+               const SkPaint& paint,
+               const SkMatrix& viewMatrix,
+               const SkRect& rect,
+               const GrStrokeInfo* strokeInfo)
+        : fRenderTarget(rt)
+        , fContext(context)
+        , fClip(&clip)
+        , fPaint(&paint)
+        , fViewMatrix(&viewMatrix)
+        , fRect(&rect)
+        , fStrokeInfo(strokeInfo) {
+        GRDRAW_ASSERT_OWNED_RESOURCE(fRenderTarget);
+    }
+
+    void execute(GrDrawContext*) const;
+
+    static uint32_t ClassID() { return GrDraw::ClassID<GrDrawRect>(); }
+
+private:
+    GrRenderTarget* fRenderTarget;
+    GrContext* fContext;
+    const GrClip* fClip;
+    const SkPaint* fPaint;
+    const SkMatrix* fViewMatrix;
+    const SkRect* fRect;
+    const GrStrokeInfo* fStrokeInfo;
+
+    typedef GrDraw INHERITED;
+};
+
+
+#endif