Fix header map nextPowerOf2 method.

test/ios/gyptest-framework.py

 #!/usr/bin/env python
 
 # Copyright 2016 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 Verifies that ios app frameworks are built correctly.
 """
 
 import TestGyp
 import TestMac
 import subprocess
 import sys
 
 if sys.platform == 'darwin' and TestMac.Xcode.Version()>="0700":
 
   test = TestGyp.TestGyp(formats=['ninja'])
   if test.format == 'xcode-ninja':
     test.skip_test()
 
   test.run_gyp('framework.gyp', chdir='framework')
 
   test.build('framework.gyp', 'iOSFramework', chdir='framework')
 
   test.built_file_must_exist(
       'iOSFramework.framework/Headers/iOSFramework.h',
       chdir='framework')
   test.built_file_must_exist(
+      'iOSFramework.framework/Headers/Thing.h',
+      chdir='framework')
+  test.built_file_must_exist(
       'iOSFramework.framework/iOSFramework',
       chdir='framework')
 
   test.pass_test()