Collect host of Web Component usage to send to RAPPOR

Source/core/frame/UseCounter.h

Index: Source/core/frame/UseCounter.h
diff --git a/Source/core/frame/UseCounter.h b/Source/core/frame/UseCounter.h
index fada9c4f10af31f8171aee765465c0d5b56b4684..2da235dbce5f44e6caea5e789604a74a22886f44 100644
--- a/Source/core/frame/UseCounter.h
+++ b/Source/core/frame/UseCounter.h
@@ -27,6 +27,7 @@
 #define UseCounter_h
 
 #include "core/CSSPropertyNames.h"
+#include "core/frame/UseByOriginCounter.h"
 #include "wtf/BitVector.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
@@ -675,6 +676,8 @@ public:
     static void countDeprecationIfNotPrivateScript(v8::Isolate*, ExecutionContext*, Feature);
     static String deprecationMessage(Feature);
 
+    UseByOriginCounter& useByOriginCounter() { return m_useByOriginCounter; }
+
     void didCommitLoad();
 
     static UseCounter* getFrom(const Document*);
@@ -719,6 +722,7 @@ private:
 
     CountBits m_countBits;
     BitVector m_CSSFeatureBits;
+    UseByOriginCounter m_useByOriginCounter;
 };
 
 } // namespace blink