Convert ARRAYSIZE_UNSAFE -> arraysize in components/.

components/variations/variations_http_header_provider_unittest.cc

Index: components/variations/variations_http_header_provider_unittest.cc
diff --git a/components/variations/variations_http_header_provider_unittest.cc b/components/variations/variations_http_header_provider_unittest.cc
index 50e4f4b8afd28b3bd495d7ce2653ea49fefb75b1..ca8a560a27449a72ec6927e9b28a2e10717ee1ac 100644
--- a/components/variations/variations_http_header_provider_unittest.cc
+++ b/components/variations/variations_http_header_provider_unittest.cc
@@ -153,7 +153,7 @@ TEST_F(VariationsHttpHeaderProviderTest, ShouldAppendHeaders) {
         {"http://a.b.ytimg.com", true},
     };
 
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
+  for (size_t i = 0; i < arraysize(cases); ++i) {
     const GURL url(cases[i].url);
     EXPECT_EQ(cases[i].should_append_headers,
               VariationsHttpHeaderProvider::ShouldAppendHeaders(url))