Move TimingFunction.h to platform/

Source/platform/blink_platform_tests.gyp

 #
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
   'targets': [{
     'target_name': 'blink_platform_unittests',
     'type': 'executable',
     'dependencies': [
       'blink_platform.gyp:blink_platform',
       '../config.gyp:unittest_config',
       '../wtf/wtf.gyp:wtf',
       '../wtf/wtf_tests.gyp:run_all_tests',
       '<(DEPTH)/url/url.gyp:url_lib',
     ],
+    'include_dirs': [
+      '<(SHARED_INTERMEDIATE_DIR)/blink',
+    ],
     'sources': [
       '<@(platform_test_files)',
+
+      # Additional .cpp files from platform_derived_sources.gyp:make_platform_derived_sources actions.
+      '<(SHARED_INTERMEDIATE_DIR)/blink/RuntimeEnabledFeatures.cpp',
+      '<(SHARED_INTERMEDIATE_DIR)/blink/RuntimeEnabledFeatures.h',
     ],
     'conditions': [
       ['os_posix==1 and OS!="mac" and OS!="android" and OS!="ios" and linux_use_tcmalloc==1', {
         'dependencies': [
           '<(DEPTH)/base/base.gyp:base',
           '<(DEPTH)/base/allocator/allocator.gyp:allocator',
         ]
       }]
     ]
   }],
 }