metrics/base: log whether drives have seek penalties.

base/sys_info_unittest.cc

Index: base/sys_info_unittest.cc
diff --git a/base/sys_info_unittest.cc b/base/sys_info_unittest.cc
index 15ae0989b1d7d4590c1cf5570a980fa901d1e1df..47ac6af85f676b6659c7e65f8d1ddb0819c2dec1 100644
--- a/base/sys_info_unittest.cc
+++ b/base/sys_info_unittest.cc
@@ -10,6 +10,10 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
+#if defined(OS_WIN)
+#include "base/win/windows_version.h"
+#endif
+
 typedef PlatformTest SysInfoTest;
 using base::FilePath;
 
@@ -41,6 +45,19 @@ TEST_F(SysInfoTest, AmountOfFreeDiskSpace) {
             << tmp_path.value();
 }
 
+TEST_F(SysInfoTest, HasSeekPenalty) {
+  FilePath tmp_path;
+  ASSERT_TRUE(base::GetTempDir(&tmp_path));
+
+  bool unused;
+  bool success = base::SysInfo::HasSeekPenalty(tmp_path, &unused);
+#if defined(OS_WIN)
+  EXPECT_EQ(base::win::GetVersion() >= base::win::VERSION_WIN7, success);
+#else
+  EXPECT_FALSE(success) << "Update if this gets implemented elsewhere.";
+#endif
+}
+
 #if defined(OS_WIN) || defined(OS_MACOSX)
 TEST_F(SysInfoTest, OperatingSystemVersionNumbers) {
   int32 os_major_version = -1;