Convert ARRAYSIZE_UNSAFE -> arraysize in content/.

content/child/multipart_response_delegate_unittest.cc

Index: content/child/multipart_response_delegate_unittest.cc
diff --git a/content/child/multipart_response_delegate_unittest.cc b/content/child/multipart_response_delegate_unittest.cc
index 450acf758c49680fc2e6e746c30902047f980948..182a1f30fffcd8eb2a039da0b67e590713d2eeff 100644
--- a/content/child/multipart_response_delegate_unittest.cc
+++ b/content/child/multipart_response_delegate_unittest.cc
@@ -122,7 +122,7 @@ TEST(MultipartResponseTest, Functions) {
     { "Line\rLine", 4, 1 },
     { "Line\r\rLine", 4, 1 },
   };
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(line_tests); ++i) {
+  for (size_t i = 0; i < arraysize(line_tests); ++i) {
     EXPECT_EQ(line_tests[i].expected,
               delegate_tester.PushOverLine(line_tests[i].input,
                                            line_tests[i].position));
@@ -144,7 +144,7 @@ TEST(MultipartResponseTest, Functions) {
     { "Foo: bar\r\nBaz:\n", false, 0, "Foo: bar\r\nBaz:\n" },
     { "\r\n", true, 1, "" },
   };
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(header_tests); ++i) {
+  for (size_t i = 0; i < arraysize(header_tests); ++i) {
     client.Reset();
     delegate_tester.data().assign(header_tests[i].data);
     EXPECT_EQ(header_tests[i].rv,
@@ -190,7 +190,7 @@ TEST(MultipartResponseTest, Functions) {
     { "foo", "bound", string::npos },
     { "bound", "--boundbound", 0 },
   };
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(boundary_tests); ++i) {
+  for (size_t i = 0; i < arraysize(boundary_tests); ++i) {
     delegate_tester.boundary().assign(boundary_tests[i].boundary);
     delegate_tester.data().assign(boundary_tests[i].data);
     EXPECT_EQ(boundary_tests[i].position,