Align all SkRecord::alloc() calls up to at least a pointer size.

include/core/SkTypes.h

Index: include/core/SkTypes.h
diff --git a/include/core/SkTypes.h b/include/core/SkTypes.h
index 4d590c24de0eaf7f96935d72b3cde6e8a6bdac40..bdd2e930ae61cc2d50e20b06dbb2461dad12ffee 100644
--- a/include/core/SkTypes.h
+++ b/include/core/SkTypes.h
@@ -300,6 +300,9 @@ static inline bool SkIsU16(long x) {
 #define SkAlign8(x)     (((x) + 7) >> 3 << 3)
 #define SkIsAlign8(x)   (0 == ((x) & 7))
 
+#define SkAlignPtr(x)   (sizeof(void*) == 8 ?   SkAlign8(x) :   SkAlign4(x))
+#define SkIsAlignPtr(x) (sizeof(void*) == 8 ? SkIsAlign8(x) : SkIsAlign4(x))
+
 typedef uint32_t SkFourByteTag;
 #define SkSetFourByteTag(a, b, c, d)    (((a) << 24) | ((b) << 16) | ((c) << 8) | (d))