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..930d514de67d73d837f4d94415860f9d260a8ed6 100644
--- a/base/sys_info_unittest.cc
+++ b/base/sys_info_unittest.cc
@@ -41,6 +41,19 @@ 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_TRUE(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;