Revert "Revert "guard old apis for querying byte-size of a bitmap/imageinfo/pixmap""

This reverts commit 809cbedd4b252be221b2ac3b4269d312fd8f53a0.

Bug: skia:
Change-Id: I680d8daeeeeb15526b44c1305d8fb0c6bfa38e1d
Reviewed-on: https://skia-review.googlesource.com/52665
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
diff --git a/tests/Float16Test.cpp b/tests/Float16Test.cpp
index 64873c3..e67d8f1 100644
--- a/tests/Float16Test.cpp
+++ b/tests/Float16Test.cpp
@@ -43,7 +43,7 @@
 
     SkAutoPixmapStorage pm;
     pm.alloc(info);
-    REPORTER_ASSERT(reporter, pm.getSafeSize() == SkToSizeT(w * h * sizeof(uint64_t)));
+    REPORTER_ASSERT(reporter, pm.computeByteSize() == SkToSizeT(w * h * sizeof(uint64_t)));
 
     SkColor4f c4 { 1, 0.5f, 0.25f, 0.5f };
     pm.erase(c4);