Implement the Request/Response bits of Background Fetch

third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.cpp

Index: third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.cpp
diff --git a/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.cpp b/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.cpp
index 7f95187352248ea3ca7f44e999d383c335631c7e..307fcd6452be9dfb2fa51b2de8c8897bb7d457f5 100644
--- a/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.cpp
+++ b/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchFailEvent.cpp
@@ -6,18 +6,29 @@
 
 #include "modules/EventModulesNames.h"
 #include "modules/background_fetch/BackgroundFetchFailEventInit.h"
+#include "modules/background_fetch/BackgroundFetchSettledRequest.h"
 
 namespace blink {
 
 BackgroundFetchFailEvent::BackgroundFetchFailEvent(
     const AtomicString& type,
     const BackgroundFetchFailEventInit& init)
-    : BackgroundFetchEvent(type, init) {}
+    : BackgroundFetchEvent(type, init), m_failedFetches(init.failedFetches()) {}
 
 BackgroundFetchFailEvent::~BackgroundFetchFailEvent() = default;
 
+HeapVector<Member<BackgroundFetchSettledRequest>>
+BackgroundFetchFailEvent::failedFetches() const {
+  return m_failedFetches;
+}
+
 const AtomicString& BackgroundFetchFailEvent::interfaceName() const {
   return EventNames::BackgroundFetchFailEvent;
 }
 
+DEFINE_TRACE(BackgroundFetchFailEvent) {
+  visitor->trace(m_failedFetches);
+  BackgroundFetchEvent::trace(visitor);
+}
+
 }  // namespace blink