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

This reverts commit 88757dacd4f532a0f647c02ae0ee596d31ab5c68.

Reason for revert: Still seems to be failing Chromium "telemetry_perf_unittests (with patch) on Android" on android_n5x_swarming_rel.

Original change's description:
> guard old apis for querying byte-size of a bitmap/imageinfo/pixmap
> 
> Now with legacy behavior for allocpixels
> 
> This was reverted, so the current CL is a "fix" on top of ...
> https://skia-review.googlesource.com/c/skia/+/50980
> 
> Related update to Chrome (in preparation for this change)
> https://chromium-review.googlesource.com/c/chromium/src/+/685719
> 
> Bug: skia:
> Change-Id: I4b370ee7e95083ab27421f008132219c9c7b86e9
> Reviewed-on: https://skia-review.googlesource.com/51341
> Reviewed-by: Florin Malita <fmalita@chromium.org>
> Commit-Queue: Mike Reed <reed@google.com>

TBR=fmalita@chromium.org,reed@google.com

Change-Id: I827a0ca1d1e3909e648fde3342cdb8601d34da8d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/52381
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
diff --git a/tests/Float16Test.cpp b/tests/Float16Test.cpp
index e67d8f1..64873c3 100644
--- a/tests/Float16Test.cpp
+++ b/tests/Float16Test.cpp
@@ -43,7 +43,7 @@
 
     SkAutoPixmapStorage pm;
     pm.alloc(info);
-    REPORTER_ASSERT(reporter, pm.computeByteSize() == SkToSizeT(w * h * sizeof(uint64_t)));
+    REPORTER_ASSERT(reporter, pm.getSafeSize() == SkToSizeT(w * h * sizeof(uint64_t)));
 
     SkColor4f c4 { 1, 0.5f, 0.25f, 0.5f };
     pm.erase(c4);