Create NetworkQuietDetector.

third_party/WebKit/Source/core/loader/FrameFetchContext.h

Index: third_party/WebKit/Source/core/loader/FrameFetchContext.h
diff --git a/third_party/WebKit/Source/core/loader/FrameFetchContext.h b/third_party/WebKit/Source/core/loader/FrameFetchContext.h
index 493770d9e29488c92454ea9879be851a73f8f1d2..295135b9500b131b80c3839d63f122ab020fa09b 100644
--- a/third_party/WebKit/Source/core/loader/FrameFetchContext.h
+++ b/third_party/WebKit/Source/core/loader/FrameFetchContext.h
@@ -34,6 +34,7 @@
 #include "core/CoreExport.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/loader/BaseFetchContext.h"
+#include "core/loader/NetworkQuietDetector.h"
 #include "platform/heap/Handle.h"
 #include "platform/loader/fetch/FetchParameters.h"
 #include "platform/loader/fetch/ResourceFetcher.h"
@@ -157,6 +158,10 @@ class CORE_EXPORT FrameFetchContext final : public BaseFetchContext {
 
   void Detach() override;
 
+  NetworkQuietDetector& GetNetworkQuietDetector() {
+    return *network_quiet_detector_;
+  }
+
   DECLARE_VIRTUAL_TRACE();
 
  private:
@@ -169,6 +174,7 @@ class CORE_EXPORT FrameFetchContext final : public BaseFetchContext {
   // TODO(kinuko): Remove constness, these return non-const members.
   DocumentLoader* MasterDocumentLoader() const;
   Document* GetDocument() const;
+  void SetDocument(Document*);
   LocalFrame* GetFrame() const;
   LocalFrameClient* GetLocalFrameClient() const;
   LocalFrame* FrameOfImportsController() const;
@@ -200,6 +206,7 @@ class CORE_EXPORT FrameFetchContext final : public BaseFetchContext {
 
   Member<DocumentLoader> document_loader_;
   Member<Document> document_;
+  Member<NetworkQuietDetector> network_quiet_detector_;
 };
 
 }  // namespace blink