Move core features code to //extensions

extensions/common/features/simple_feature_filter.h

Index: extensions/common/features/simple_feature_filter.h
diff --git a/chrome/common/extensions/features/simple_feature_filter.h b/extensions/common/features/simple_feature_filter.h
similarity index 90%
rename from chrome/common/extensions/features/simple_feature_filter.h
rename to extensions/common/features/simple_feature_filter.h
index 7c4726a051e4a5da319d37bb98c6d21955cdefe1..59e8f445c968071128b9438c091c9b105346ed95 100644
--- a/chrome/common/extensions/features/simple_feature_filter.h
+++ b/extensions/common/features/simple_feature_filter.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_COMMON_EXTENSIONS_FEATURES_SIMPLE_FEATURE_FILTER_H_
-#define CHROME_COMMON_EXTENSIONS_FEATURES_SIMPLE_FEATURE_FILTER_H_
+#ifndef EXTENSIONS_COMMON_FEATURES_SIMPLE_FEATURE_FILTER_H_
+#define EXTENSIONS_COMMON_FEATURES_SIMPLE_FEATURE_FILTER_H_
 
 #include <string>
 
@@ -60,4 +60,4 @@ class SimpleFeatureFilter {
 
 }  // namespace extensions
 
-#endif  // CHROME_COMMON_EXTENSIONS_FEATURES_SIMPLE_FEATURE_FILTER_H_
+#endif  // EXTENSIONS_COMMON_FEATURES_SIMPLE_FEATURE_FILTER_H_