detach -> release

The C++ standard library uses the name "release" for the operation we call "detach".

Rewriting each "detach(" to "release(" brings us a step closer to using standard library types directly (e.g. std::unique_ptr instead of SkAutoTDelete).

This was a fairly blind transformation.  There may have been unintentional conversions in here, but it's probably for the best to have everything uniformly say "release".

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1809733002

Review URL: https://codereview.chromium.org/1809733002
diff --git a/src/gpu/GrGpu.cpp b/src/gpu/GrGpu.cpp
index afeeda7..512ce9b 100644
--- a/src/gpu/GrGpu.cpp
+++ b/src/gpu/GrGpu.cpp
@@ -477,7 +477,7 @@
         return specs;
     }
     const MultisampleSpecs& specs = *new (&fMultisampleSpecsAllocator)
-        MultisampleSpecs{effectiveKey, effectiveSampleCnt, locations.detach()};
+        MultisampleSpecs{effectiveKey, effectiveSampleCnt, locations.release()};
     if (fMultisampleSpecsMap.count() <= effectiveKey) {
         int n = 1 + effectiveKey - fMultisampleSpecsMap.count();
         fMultisampleSpecsMap.push_back_n(n, (const MultisampleSpecs*) nullptr);