Revert of Switch uses of SkChecksum::Compute to Murmur3. (patchset #2 id:20001 of https://codereview.chromium.org/1436973003/ )

Reason for revert:
I would not have expected this to change any images.

Looks like it's changed both MSAA and non-MSAA GMs:
1d024a3c909ae5cefa5e8b339e2b52dc73ee85ac&unt=true&head=true&query=source_type%3Dgm">https://gold.skia.org/search2?blame=1d024a3c909ae5cefa5e8b339e2b52dc73ee85ac&unt=true&head=true&query=source_type%3Dgm

Original issue's description:
> Switch uses of SkChecksum::Compute to Murmur3.
>
> SkChecksum::Compute is a very, very poorly distributed hash function.
> This replaces all remaining uses with Murmur3.
>
> The only interesting stuff is in src/gpu.
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/1d024a3c909ae5cefa5e8b339e2b52dc73ee85ac

TBR=bsalomon@google.com,mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1445523003

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/ChecksumTest.cpp b/tests/ChecksumTest.cpp
index cf9d65c59e..c095a5ac11 100644
--- a/tests/ChecksumTest.cpp
+++ b/tests/ChecksumTest.cpp
@@ -18,7 +18,7 @@ static uint32_t murmur_noseed(const uint32_t* d, size_t l) { return SkChecksum::
 DEF_TEST(Checksum, r) {
     // Algorithms to test.  They're currently all uint32_t(const uint32_t*, size_t).
     typedef uint32_t(*algorithmProc)(const uint32_t*, size_t);
-    const algorithmProc kAlgorithms[] = { &murmur_noseed };
+    const algorithmProc kAlgorithms[] = { &SkChecksum::Compute, &murmur_noseed };
 
     // Put 128 random bytes into two identical buffers.  Any multiple of 4 will do.
     const size_t kBytes = SkAlign4(128);