diff --git a/dom/base/ChromeUtils.cpp b/dom/base/ChromeUtils.cpp
index ff407ccfabd7..3c0862bc5538 100644
--- a/dom/base/ChromeUtils.cpp
+++ b/dom/base/ChromeUtils.cpp
@@ -19,6 +19,7 @@
 #include "mozilla/TimeStamp.h"
 #include "mozilla/dom/BrowsingContext.h"
 #include "mozilla/dom/IdleDeadline.h"
+#include "mozilla/dom/ReportingHeader.h"
 #include "mozilla/dom/UnionTypes.h"
 #include "mozilla/dom/WindowBinding.h"  // For IdleRequestCallback/Options
 #include "IOActivityMonitor.h"
@@ -726,5 +727,16 @@ constexpr auto kSkipSelfHosted = JS::SavedFrameSelfHosted::Exclude;
   BrowsingContext::GetRootBrowsingContexts(aBrowsingContexts);
 }
 
+/* static */ bool ChromeUtils::HasReportingHeaderForOrigin(
+    GlobalObject& global, const nsAString& aOrigin, ErrorResult& aRv) {
+  if (!XRE_IsParentProcess()) {
+    aRv.Throw(NS_ERROR_FAILURE);
+    return false;
+  }
+
+  return ReportingHeader::HasReportingHeaderForOrigin(
+      NS_ConvertUTF16toUTF8(aOrigin));
+}
+
 }  // namespace dom
 }  // namespace mozilla
diff --git a/dom/base/ChromeUtils.h b/dom/base/ChromeUtils.h
index 8308f6af4a1e..16525b3a4e5d 100644
--- a/dom/base/ChromeUtils.h
+++ b/dom/base/ChromeUtils.h
@@ -165,6 +165,10 @@ class ChromeUtils {
   static void GetRootBrowsingContexts(
       GlobalObject& aGlobal,
       nsTArray<RefPtr<BrowsingContext>>& aBrowsingContexts);
+
+  static bool HasReportingHeaderForOrigin(GlobalObject& global,
+                                          const nsAString& aOrigin,
+                                          ErrorResult& aRv);
 };
 
 }  // namespace dom
diff --git a/dom/chrome-webidl/ChromeUtils.webidl b/dom/chrome-webidl/ChromeUtils.webidl
index b555d7feb366..20b67c6f3b92 100644
--- a/dom/chrome-webidl/ChromeUtils.webidl
+++ b/dom/chrome-webidl/ChromeUtils.webidl
@@ -364,6 +364,9 @@ partial namespace ChromeUtils {
    */
   [ChromeOnly]
   sequence<BrowsingContext> getRootBrowsingContexts();
+
+  [ChromeOnly, Throws]
+  boolean hasReportingHeaderForOrigin(DOMString aOrigin);
 };
 
 /**
diff --git a/dom/reporting/ReportingHeader.cpp b/dom/reporting/ReportingHeader.cpp
index d9eaa019e32e..5a082c1b86a0 100644
--- a/dom/reporting/ReportingHeader.cpp
+++ b/dom/reporting/ReportingHeader.cpp
@@ -653,6 +653,15 @@ void ReportingHeader::RemoveOriginsFromOriginAttributesPattern(
 
 void ReportingHeader::RemoveOrigins() { mOrigins.Clear(); }
 
+/* static */ bool ReportingHeader::HasReportingHeaderForOrigin(
+    const nsACString& aOrigin) {
+  if (!gReporting) {
+    return false;
+  }
+
+  return gReporting->mOrigins.Contains(aOrigin);
+}
+
 NS_INTERFACE_MAP_BEGIN(ReportingHeader)
   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIObserver)
   NS_INTERFACE_MAP_ENTRY(nsIObserver)
diff --git a/dom/reporting/ReportingHeader.h b/dom/reporting/ReportingHeader.h
index dd3817d46f94..31ebb3e59533 100644
--- a/dom/reporting/ReportingHeader.h
+++ b/dom/reporting/ReportingHeader.h
@@ -65,6 +65,10 @@ class ReportingHeader final : public nsIObserver {
                              const nsACString& aEndpointURL,
                              const mozilla::ipc::PrincipalInfo& aPrincipalInfo);
 
+  // ChromeOnly-WebIDL methods
+
+  static bool HasReportingHeaderForOrigin(const nsACString& aOrigin);
+
  private:
   ReportingHeader();
   ~ReportingHeader();