mac: Load the system hotkeys after launch.

chrome/browser/ui/cocoa/system_hotkey_map_unittest.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <gtest/gtest.h>
 
 #import <Carbon/Carbon.h>
 #import <Cocoa/Cocoa.h>
 
 #import "chrome/browser/ui/cocoa/system_hotkey_map.h"
 #include "chrome/test/base/ui_test_utils.h"
 
-namespace {
-
 class SystemHotkeyMapTest : public ::testing::Test {
  public:
   SystemHotkeyMapTest() {}
 };
 
 TEST_F(SystemHotkeyMapTest, Parse) {
   std::string path = ui_test_utils::GetTestUrl(
                          base::FilePath(base::FilePath::kCurrentDirectory),
                          base::FilePath("mac/mac_system_hotkeys.plist")).path();
   NSString* file_path = [NSString stringWithUTF8String:path.c_str()];
@@ skipping 16 matching lines @@
   // Command + Shift + Ctr + ` is not a common key binding.
   modifiers = NSCommandKeyMask | NSShiftKeyMask | NSControlKeyMask;
   EXPECT_FALSE(map.IsHotkeyReserved(key_code, modifiers));
 
   // Command + L is not a common key binding.
   key_code = kVK_ANSI_L;
   modifiers = NSCommandKeyMask;
   EXPECT_FALSE(map.IsHotkeyReserved(key_code, modifiers));
 }
 
-}  // namespace
+TEST_F(SystemHotkeyMapTest, ParseNil) {
+  NSData* data = nil;
+
+  SystemHotkeyMap map;
+  bool result = map.ParseData(data);
+  EXPECT_FALSE(result);
+}