Use SkTLazy to hold path in SkClipStack::Element

include/core/SkTLazy.h

Index: include/core/SkTLazy.h
diff --git a/include/core/SkTLazy.h b/include/core/SkTLazy.h
index 2147b6681fa601dff47b8554eeea58fc5c70fc1e..be00b5fcc654b8d0d6a7a86c333bf1a4660383d5 100644
--- a/include/core/SkTLazy.h
+++ b/include/core/SkTLazy.h
@@ -74,6 +74,13 @@ public:
         return fPtr;
     }
 
+    void reset() {

[reed1, 2014/02/24 21:19:52]

/*
  * Destroy the lazy object (if it was created via init())
 */

[bsalomon, 2014/02/27 16:31:16]

Done.

+        if (this->isValid()) {
+            fPtr->~T();
+            fPtr = NULL;
+        }
+    }
+
     /**
      *  Returns true if a valid object has been initialized in the SkTLazy,
      *  false otherwise.