Add WebPageImportanceSignals::issuedNonGetFetchFromScript()

Source/web/WebPageImportanceSignals.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "public/web/WebPageImportanceSignals.h"
 
+#include "core/dom/Document.h"
+#include "core/dom/ExecutionContext.h"
+#include "core/frame/FrameHost.h"
+#include "core/frame/LocalFrame.h"
+#include "core/page/ChromeClient.h"
 #include "public/platform/Platform.h"
 
 namespace blink {
 
 void WebPageImportanceSignals::reset()
 {
     m_hadFormInteraction = false;
+    m_issuedNonGetXHR = false;
 }
 
 void WebPageImportanceSignals::onCommitLoad()
 {
     Platform::current()->histogramEnumeration("PageImportanceSignals.HadFormInteraction.OnCommitLoad", m_hadFormInteraction, 2);
+    Platform::current()->histogramEnumeration("PageImportanceSignals.IssuedNonGetXHR.OnCommitLoad", m_issuedNonGetXHR, 2);
 
     reset();
 }
 
 } // namespace blink