ui: No need to typedef testing::Test in unittests.

ui/base/keycodes/keyboard_code_conversion_mac.mm

Index: ui/base/keycodes/keyboard_code_conversion_mac.mm
diff --git a/ui/base/keycodes/keyboard_code_conversion_mac.mm b/ui/base/keycodes/keyboard_code_conversion_mac.mm
index 3d9e0a65f070bf3b008b76ce3d1b64c30120c0a2..2f8c2110e9242f7b08c15aa4db093e4ec5080b78 100644
--- a/ui/base/keycodes/keyboard_code_conversion_mac.mm
+++ b/ui/base/keycodes/keyboard_code_conversion_mac.mm
@@ -5,6 +5,7 @@
 #import "ui/base/keycodes/keyboard_code_conversion_mac.h"
 
 #include <algorithm>
+
 #import <Carbon/Carbon.h>
 
 #include "base/logging.h"
@@ -447,7 +448,7 @@ KeyboardCode KeyboardCodeFromKeyCode(unsigned short keyCode) {
   return kKeyboardCodes[keyCode];
 }
 
-}  // anonymous namespace
+}  // namespace
 
 int MacKeyCodeForWindowsKeyCode(KeyboardCode keycode,
                                 NSUInteger flags,