add pipecanvas

samplecode/SampleApp.h

Index: samplecode/SampleApp.h
diff --git a/samplecode/SampleApp.h b/samplecode/SampleApp.h
index 75416426b463941f58f0cee1c7bc7d41225ea418..121e6749de952c6f5a0e145a03c5953e3a3f1895 100644
--- a/samplecode/SampleApp.h
+++ b/samplecode/SampleApp.h
@@ -13,11 +13,14 @@
 #include "SkPicture.h"
 #include "SkPictureRecorder.h"
 #include "SkScalar.h"
+#include "SkStream.h"
 #include "SkTDArray.h"
 #include "SkTouchGesture.h"
 #include "SkWindow.h"
 #include "timer/Timer.h"
 
+#include "SkPipe.h"
+
 class GrContext;
 class GrRenderTarget;
 
@@ -165,6 +168,10 @@ private:
 
     int fCurrIndex;
 
+    SkDynamicMemoryWStream* fPipeStream;
+    SkPipeSerializer        fPipeSerializer;
+    SkPipeDeserializer      fPipeDeserializer;
+
     SkPictureRecorder fRecorder;
     SkAutoTDelete<SkCanvas> fFlagsFilterCanvas;
     SkPath fClipPath;