Remove histogram in ShadowRoot constructor

Source/core/dom/shadow/ShadowRoot.cpp

Index: Source/core/dom/shadow/ShadowRoot.cpp
diff --git a/Source/core/dom/shadow/ShadowRoot.cpp b/Source/core/dom/shadow/ShadowRoot.cpp
index 5d6c7c846c78759440f0b9fed73328e282800f29..8a2517afc4494b9253749b77e3c08ddc3eb89c09 100644
--- a/Source/core/dom/shadow/ShadowRoot.cpp
+++ b/Source/core/dom/shadow/ShadowRoot.cpp
@@ -69,11 +69,6 @@ ShadowRoot::ShadowRoot(Document& document, ShadowRootType type)
     , m_descendantInsertionPointsIsValid(false)
 {
     ScriptWrappable::init(this);
-
-    if (type == ShadowRoot::AuthorShadowRoot) {
-        ShadowRootUsageOriginType usageType = document.url().protocolIsInHTTPFamily() ? ShadowRootUsageOriginWeb : ShadowRootUsageOriginNotWeb;
-        blink::Platform::current()->histogramEnumeration("WebCore.ShadowRoot.constructor", usageType, ShadowRootUsageOriginMax);
-    }
 }
 
 ShadowRoot::~ShadowRoot()