Make naming in Host.h in line with coding standards.

Based on post-commit review comments by Chandler Carruth on
https://reviews.llvm.org/D31236. Thanks!

llvm-svn: 299211
diff --git a/llvm/unittests/Support/Host.cpp b/llvm/unittests/Support/Host.cpp
index 0d22ba8..48f021e 100644
--- a/llvm/unittests/Support/Host.cpp
+++ b/llvm/unittests/Support/Host.cpp
@@ -66,19 +66,16 @@
 Serial          : 0000000000000000
 )";
 
-  EXPECT_EQ(sys::LinuxReadCpuInfo::getHostCPUName_arm(CortexA9ProcCpuinfo),
+  EXPECT_EQ(sys::detail::getHostCPUNameForARM(CortexA9ProcCpuinfo),
             "cortex-a9");
-  EXPECT_EQ(
-      sys::LinuxReadCpuInfo::getHostCPUName_arm("CPU implementer : 0x41\n"
-                                                "CPU part        : 0xc0f"),
-      "cortex-a15");
+  EXPECT_EQ(sys::detail::getHostCPUNameForARM("CPU implementer : 0x41\n"
+                                              "CPU part        : 0xc0f"),
+            "cortex-a15");
   // Verify that both CPU implementer and CPU part are checked:
-  EXPECT_EQ(
-      sys::LinuxReadCpuInfo::getHostCPUName_arm("CPU implementer : 0x40\n"
-                                                "CPU part        : 0xc0f"),
-      "generic");
-  EXPECT_EQ(
-      sys::LinuxReadCpuInfo::getHostCPUName_arm("CPU implementer : 0x51\n"
-                                                "CPU part        : 0x06f"),
-      "krait");
+  EXPECT_EQ(sys::detail::getHostCPUNameForARM("CPU implementer : 0x40\n"
+                                              "CPU part        : 0xc0f"),
+            "generic");
+  EXPECT_EQ(sys::detail::getHostCPUNameForARM("CPU implementer : 0x51\n"
+                                              "CPU part        : 0x06f"),
+            "krait");
 }