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

Previously we had size_t and uint64_t variations.

The new (simpler) API always..
- returns size_t, or 0 if the calculation overflowed
- returns the trimmed size (does not include rowBytes padding for the last row)

Bug: skia:
Change-Id: I05173e877918327c7b207d2f7f1ab0db36892e2e
Reviewed-on: https://skia-review.googlesource.com/50980
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Leon Scroggins <scroggo@google.com>
diff --git a/bench/AndroidCodecBench.cpp b/bench/AndroidCodecBench.cpp
index d9abac6..886e875 100644
--- a/bench/AndroidCodecBench.cpp
+++ b/bench/AndroidCodecBench.cpp
@@ -38,7 +38,7 @@
         fInfo = fInfo.makeAlphaType(kPremul_SkAlphaType);
     }
 
-    fPixelStorage.reset(fInfo.getSafeSize(fInfo.minRowBytes()));
+    fPixelStorage.reset(fInfo.computeMinByteSize());
 }
 
 void AndroidCodecBench::onDraw(int n, SkCanvas* canvas) {