Don't count UseCounters in private scripts

Source/core/frame/UseCounter.h

 /*
  * Copyright (C) 2012 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #ifndef UseCounter_h
 #define UseCounter_h
 
 #include "core/CSSPropertyNames.h"
 #include "wtf/BitVector.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
+#include <v8.h>
 
 namespace blink {
 
 class CSSStyleSheet;
 class LocalDOMWindow;
 class Document;
 class ExecutionContext;
 class StyleSheetContents;
 
 // UseCounter is used for counting the number of times features of
@@ skipping 495 matching lines @@
         // Also, run update_use_counter_feature_enum.py in chromium/src/tools/metrics/histograms/
         // to update the UMA mapping.
         NumberOfFeatures, // This enum value must be last.
     };
 
     // "count" sets the bit for this feature to 1. Repeated calls are ignored.
     static void count(const Document&, Feature);
     // This doesn't count for ExecutionContexts for shared workers and service
     // workers.
     static void count(const ExecutionContext*, Feature);
+    // Use countIfNotPrivateScript() instead of count() if you don't want
+    // to count metrics in private scripts. You should use
+    // countIfNotPrivateScript() in a binding layer.
+    static void countIfNotPrivateScript(v8::Isolate*, const Document&, Feature);
+    static void countIfNotPrivateScript(v8::Isolate*, const ExecutionContext*, Feature);
+
     void count(CSSParserContext, CSSPropertyID);
     void count(Feature);
 
     // "countDeprecation" sets the bit for this feature to 1, and sends a deprecation
     // warning to the console. Repeated calls are ignored.
     //
     // Be considerate to developers' consoles: features should only send
     // deprecation warnings when we're actively interested in removing them from
     // the platform.
     //
     // The ExecutionContext* overload doesn't work for shared workers and
     // service workers.
     static void countDeprecation(const LocalDOMWindow*, Feature);
     static void countDeprecation(ExecutionContext*, Feature);
     static void countDeprecation(const Document&, Feature);
+    // Use countDeprecationIfNotPrivateScript() instead of countDeprecation()
+    // if you don't want to count metrics in private scripts. You should use
+    // countDeprecationIfNotPrivateScript() in a binding layer.
+    static void countDeprecationIfNotPrivateScript(v8::Isolate*, ExecutionContext*, Feature);
     String deprecationMessage(Feature);
 
     void didCommitLoad();
 
     static UseCounter* getFrom(const Document*);
     static UseCounter* getFrom(const CSSStyleSheet*);
     static UseCounter* getFrom(const StyleSheetContents*);
 
     static int mapCSSPropertyIdToCSSSampleIdForHistogram(int id);
 
@@ skipping 23 matching lines @@
 
     void updateMeasurements();
 
     OwnPtr<BitVector> m_countBits;
     BitVector m_CSSFeatureBits;
 };
 
 } // namespace blink
 
 #endif // UseCounter_h