Convert ARRAYSIZE_UNSAFE -> arraysize in content/.

content/child/webcrypto/test/rsa_ssa_unittest.cc

Index: content/child/webcrypto/test/rsa_ssa_unittest.cc
diff --git a/content/child/webcrypto/test/rsa_ssa_unittest.cc b/content/child/webcrypto/test/rsa_ssa_unittest.cc
index f3246c07b8148731d1c306648e8f2bc31bd356b6..33d0751354c52129a98bc600d3c14f4852eef4c7 100644
--- a/content/child/webcrypto/test/rsa_ssa_unittest.cc
+++ b/content/child/webcrypto/test/rsa_ssa_unittest.cc
@@ -1103,8 +1103,7 @@ TEST(WebCryptoRsaSsaTest, ImportExportJwkRsaPublicKey) {
       {blink::WebCryptoAlgorithmIdSha512, blink::WebCryptoKeyUsageVerify,
        "RS512"}};
 
-  for (size_t test_index = 0; test_index < ARRAYSIZE_UNSAFE(kTests);
-       ++test_index) {
+  for (size_t test_index = 0; test_index < arraysize(kTests); ++test_index) {
     SCOPED_TRACE(test_index);
     const TestCase& test = kTests[test_index];
 
@@ -1181,7 +1180,7 @@ TEST(WebCryptoRsaSsaTest, ImportJwkRsaFailures) {
 
   // Fail if either "n" or "e" is not present or malformed.
   const std::string kKtyParmName[] = {"n", "e"};
-  for (size_t idx = 0; idx < ARRAYSIZE_UNSAFE(kKtyParmName); ++idx) {
+  for (size_t idx = 0; idx < arraysize(kKtyParmName); ++idx) {
     // Fail on missing parameter.
     dict.Remove(kKtyParmName[idx], NULL);
     EXPECT_NE(Status::Success(),