Perform SkPicture analysis lazily.

include/core/SkPicture.h

 /*
  * Copyright 2007 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPicture_DEFINED
 #define SkPicture_DEFINED
 
 #include "SkImageDecoder.h"
+#include "SkLazyPtr.h"
 #include "SkRefCnt.h"
 #include "SkTDArray.h"
 
 #if SK_SUPPORT_GPU
 class GrContext;
 #endif
 
 class SkBitmap;
 class SkBBoxHierarchy;
 class SkCanvas;
@@ skipping 263 matching lines @@
 
     struct Analysis {
         Analysis() {}  // Only used by SkPictureData codepath.
         explicit Analysis(const SkRecord&);
 
         bool suitableForGpuRasterization(const char** reason, int sampleCount) const;
 
         uint8_t     fNumSlowPathsAndDashEffects;
         bool        fWillPlaybackBitmaps : 1;
         bool        fHasText             : 1;
-    } fAnalysis;
+    };
+    SkLazyPtr<Analysis> fAnalysis;
+    const Analysis& analysis() const;
 
     friend class SkPictureRecorder;            // SkRecord-based constructor.
     friend class GrLayerHoister;               // access to fRecord
     friend class ReplaceDraw;
     friend class SkPictureUtils;
     friend class SkRecordedDrawable;
 };
 SK_COMPILE_ASSERT(sizeof(SkPicture) <= 88, SkPictureSize);
 
 #endif