mac: Replace base::mac::ScopedCFTypeRef with base::ScopedCFTypeRef.

sync/util/get_session_name_mac.mm

Index: sync/util/get_session_name_mac.mm
diff --git a/sync/util/get_session_name_mac.mm b/sync/util/get_session_name_mac.mm
index f576ea7587f39b73e1b56fef99cf62aba0af1a6a..aa61e2f6d1a969849671836648297f21fc4a2e4d 100644
--- a/sync/util/get_session_name_mac.mm
+++ b/sync/util/get_session_name_mac.mm
@@ -17,16 +17,15 @@ namespace internal {
 std::string GetHardwareModelName() {
   // Do not use NSHost currentHost, as it's very slow. http://crbug.com/138570
   SCDynamicStoreContext context = { 0, NULL, NULL, NULL };
-  base::mac::ScopedCFTypeRef<SCDynamicStoreRef> store(
-      SCDynamicStoreCreate(kCFAllocatorDefault, CFSTR("chrome_sync"),
-                           NULL, &context));
-  base::mac::ScopedCFTypeRef<CFStringRef> machine_name(
+  base::ScopedCFTypeRef<SCDynamicStoreRef> store(SCDynamicStoreCreate(
+      kCFAllocatorDefault, CFSTR("chrome_sync"), NULL, &context));
+  base::ScopedCFTypeRef<CFStringRef> machine_name(
       SCDynamicStoreCopyLocalHostName(store.get()));
   if (machine_name.get())
     return base::SysCFStringRefToUTF8(machine_name.get());
 
   // Fall back to get computer name.
-  base::mac::ScopedCFTypeRef<CFStringRef> computer_name(
+  base::ScopedCFTypeRef<CFStringRef> computer_name(
       SCDynamicStoreCopyComputerName(store.get(), NULL));
   if (computer_name.get())
     return base::SysCFStringRefToUTF8(computer_name.get());