Add a GPU paths to resource cache of the context

src/gpu/GrPath.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrPath_DEFINED
 #define GrPath_DEFINED
 
 #include "GrResource.h"
+#include "GrResourceCache.h"
+#include "SkPath.h"
 #include "SkRect.h"
 #include "SkStrokeRec.h"
 
 class GrPath : public GrResource {
 public:
     SK_DECLARE_INST_COUNT(GrPath);
 
-    GrPath(GrGpu* gpu, bool isWrapped, const SkStrokeRec& stroke)
+    GrPath(GrGpu* gpu, bool isWrapped, const SkPath& skPath, const SkStrokeRec& stroke)
         : INHERITED(gpu, isWrapped),
-          fStroke(stroke) {
+          fSkPath(skPath),
+          fStroke(stroke),
+          fBounds(skPath.getBounds()) {
+    }
+
+    static GrResourceKey ComputeKey(const SkPath& path, const SkStrokeRec& stroke);
+
+    bool isEqualTo(const SkPath& path, const SkStrokeRec& stroke) {
+        return fSkPath == path && fStroke == stroke;
     }
 
     const SkRect& getBounds() const { return fBounds; }
 
     const SkStrokeRec& getStroke() const { return fStroke; }
 
 protected:
+    SkPath fSkPath;
+    SkStrokeRec fStroke;
     SkRect fBounds;
-    SkStrokeRec fStroke;
 
 private:
     typedef GrResource INHERITED;
 };
 
 #endif