cache SkImage::Info calculation in lazypixelref

src/lazy/SkLazyPixelRef.h

Index: src/lazy/SkLazyPixelRef.h
diff --git a/src/lazy/SkLazyPixelRef.h b/src/lazy/SkLazyPixelRef.h
index c51675dd5f301e648e20db0daa40db3a1d7faae6..2e0fd96f71f2a6c1b29a6cb2a310ee730936e568 100644
--- a/src/lazy/SkLazyPixelRef.h
+++ b/src/lazy/SkLazyPixelRef.h
@@ -72,6 +72,10 @@ private:
     intptr_t                    fCacheId;
     size_t                      fRowBytes;
 
+    const SkImage::Info* getInfo();

[scroggo, 2013/10/21 18:34:17]

Could you add comments that fInfo should never be used directly, and getInfo
should be called instead?

[reed1, 2013/10/21 18:46:10]

Done.

+
+    SkImage::Info               fInfo;

[scroggo, 2013/10/21 18:34:17]

Style nit: fields before methods

[reed1, 2013/10/21 18:46:10]

Done.

+
 #if LAZY_CACHE_STATS
     static int32_t              gCacheHits;
     static int32_t              gCacheMisses;