[iOS/ARC] Fix a violation of ODR in base::BindBlock under ARC.

ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm

Index: ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm
diff --git a/ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm b/ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm
index 77e807bd321e06726e1aba6c527b6295a47cd7b2..2114a1eea468c4ff9e77b8afc177198200d45c16 100644
--- a/ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm
+++ b/ios/chrome/browser/ssl/ios_ssl_error_handler_unittest.mm
@@ -55,7 +55,7 @@ TEST_F(IOSSSLErrorHandlerTest, NonOverridable) {
   __block bool do_not_proceed_callback_called = false;
   IOSSSLErrorHandler::HandleSSLError(
       web_state(), net::ERR_CERT_AUTHORITY_INVALID, ssl_info, url, false,
-      base::BindBlock(^(bool proceed) {
+      base::BindBlockArc(^(bool proceed) {
         EXPECT_FALSE(proceed);
         do_not_proceed_callback_called = true;
       }));
@@ -79,7 +79,7 @@ TEST_F(IOSSSLErrorHandlerTest, DISABLED_OverridableProceed) {
   __block bool proceed_callback_called = false;
   IOSSSLErrorHandler::HandleSSLError(
       web_state(), net::ERR_CERT_AUTHORITY_INVALID, ssl_info, url, true,
-      base::BindBlock(^(bool proceed) {
+      base::BindBlockArc(^(bool proceed) {
         EXPECT_TRUE(proceed);
         proceed_callback_called = true;
       }));
@@ -102,7 +102,7 @@ TEST_F(IOSSSLErrorHandlerTest, OverridableDontProceed) {
   __block bool do_not_proceed_callback_called = false;
   IOSSSLErrorHandler::HandleSSLError(
       web_state(), net::ERR_CERT_AUTHORITY_INVALID, ssl_info, url, true,
-      base::BindBlock(^(bool proceed) {
+      base::BindBlockArc(^(bool proceed) {
         EXPECT_FALSE(proceed);
         do_not_proceed_callback_called = true;
       }));