mini_installer: Change to use _countof rather than base's arraysize macro.

chrome/installer/mini_installer/configuration_test.cc

Index: chrome/installer/mini_installer/configuration_test.cc
diff --git a/chrome/installer/mini_installer/configuration_test.cc b/chrome/installer/mini_installer/configuration_test.cc
index 22333a1597191e37317ef4449b3d48a13541d1e1..89e7f2d298ae306e311cb17033d02244ed86f575 100644
--- a/chrome/installer/mini_installer/configuration_test.cc
+++ b/chrome/installer/mini_installer/configuration_test.cc
@@ -2,9 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "chrome/installer/mini_installer/configuration.h"
+
 #include "base/basictypes.h"
 #include "chrome/installer/mini_installer/appid.h"
-#include "chrome/installer/mini_installer/configuration.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using mini_installer::Configuration;
@@ -57,9 +58,9 @@ TEST(MiniInstallerConfigurationTest, CommandLine) {
     L"spam.exe",
     L"spam.exe --foo",
   };
-  for (size_t i = 0; i < arraysize(kCommandLines); ++i) {
-    EXPECT_TRUE(std::wstring(kCommandLines[i]) ==
-                TestConfiguration(kCommandLines[i]).command_line());
+  for (const wchar_t* command_line : kCommandLines) {
+    EXPECT_TRUE(std::wstring(command_line) ==
+                TestConfiguration(command_line).command_line());
   }
 }