Collect host of Web Component usage to send to RAPPOR

Source/core/frame/UseCounter.cpp

 
 /*
  * 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
@@ skipping 16 matching lines @@
 #include "config.h"
 #include "core/frame/UseCounter.h"
 
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/frame/FrameConsole.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/LocalFrame.h"
+#include "core/frame/UseByOriginCounter.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "public/platform/Platform.h"
 
 namespace blink {
 
 static int totalPagesMeasuredCSSSampleId() { return 1; }
 
 int UseCounter::m_muteCount = 0;
 
@@ skipping 521 matching lines @@
             int cssSampleId = mapCSSPropertyIdToCSSSampleIdForHistogram(i);
             blink::Platform::current()->histogramEnumeration("WebCore.FeatureObserver.CSSProperties", cssSampleId, maximumCSSSampleId());
             needsPagesMeasuredUpdate = true;
         }
     }
 
     if (needsPagesMeasuredUpdate)
         blink::Platform::current()->histogramEnumeration("WebCore.FeatureObserver.CSSProperties", totalPagesMeasuredCSSSampleId(), maximumCSSSampleId());
 
     m_CSSFeatureBits.clearAll();
+
+    m_useByOriginCounter.updateMeasurementsAndClear();
 }
 
 void UseCounter::didCommitLoad()
 {
     updateMeasurements();
 }
 
 void UseCounter::count(const Frame* frame, Feature feature)
 {
     if (!frame)
@@ skipping 311 matching lines @@
 UseCounter* UseCounter::getFrom(const StyleSheetContents* sheetContents)
 {
     // FIXME: We may want to handle stylesheets that have multiple owners
     //        http://crbug.com/242125
     if (sheetContents && sheetContents->hasSingleOwnerNode())
         return getFrom(sheetContents->singleOwnerDocument());
     return 0;
 }
 
 } // namespace blink