3 files changed, 2 insertions, 51 deletions
diff --git a/dom/base/nsIDocument.h b/dom/base/nsIDocument.h
index 1e0c9562e..7a73fae71 100644
--- a/dom/base/nsIDocument.h
+++ b/dom/base/nsIDocument.h
@@ -18,11 +18,11 @@
 #include "nsINode.h"                     // for base class
 #include "nsIScriptGlobalObject.h"       // for member (in nsCOMPtr)
 #include "nsIServiceManager.h"
+#include "nsIURI.h"                      // for use in inline functions
 #include "nsIUUIDGenerator.h"
 #include "nsPIDOMWindow.h"               // for use in inline functions
 #include "nsPropertyTable.h"             // for member
-#include "nsDataHashtable.h"             // for member
-#include "nsURIHashKey.h"                // for member
+#include "nsTHashtable.h"                // for member
 #include "mozilla/net/ReferrerPolicy.h"  // for member
 #include "nsWeakReference.h"
 #include "mozilla/UseCounter.h"
@@ -182,13 +182,6 @@ enum DocumentFlavor {
   DocumentFlavorPlain, // Just a Document
 };
 
-// Enum for HSTS priming states
-enum class HSTSPrimingState {
-  eNO_HSTS_PRIMING = 0,    // don't do HSTS Priming
-  eHSTS_PRIMING_ALLOW = 1, // if HSTS priming fails, allow the load to proceed
-  eHSTS_PRIMING_BLOCK = 2  // if HSTS priming fails, block the load
-};
-
 // Document states
 
 // RTL locale: specific to the XUL localedir attribute
@@ -406,34 +399,6 @@ public:
   }
 
   /**
-   * Check to see if a subresource we want to load requires HSTS priming
-   * to be done.
-   */
-  HSTSPrimingState GetHSTSPrimingStateForLocation(nsIURI* aContentLocation) const
-  {
-    HSTSPrimingState state;
-    if (mHSTSPrimingURIList.Get(aContentLocation, &state)) {
-      return state;
-    }
-    return HSTSPrimingState::eNO_HSTS_PRIMING;
-  }
-
-  /**
-   * Add a subresource to the HSTS priming list. If this URI is
-   * not in the HSTS cache, it will trigger an HSTS priming request
-   * when we try to load it.
-   */
-  void AddHSTSPrimingLocation(nsIURI* aContentLocation, HSTSPrimingState aState)
-  {
-    mHSTSPrimingURIList.Put(aContentLocation, aState);
-  }
-
-  void ClearHSTSPrimingLocation(nsIURI* aContentLocation)
-  {
-    mHSTSPrimingURIList.Remove(aContentLocation);
-  }
-
-  /**
    * Set the principal responsible for this document.
    */
   virtual void SetPrincipal(nsIPrincipal *aPrincipal) = 0;
@@ -2987,11 +2952,6 @@ protected:
   bool mUpgradeInsecureRequests;
   bool mUpgradeInsecurePreloads;
 
-  // if nsMixedContentBlocker requires sending an HSTS priming request,
-  // temporarily store that in the document so that it can be propogated to the
-  // LoadInfo and eventually the HTTP Channel
-  nsDataHashtable<nsURIHashKey, HSTSPrimingState> mHSTSPrimingURIList;
-
   mozilla::WeakPtr<nsDocShell> mDocumentContainer;
 
   nsCString mCharacterSet;
diff --git a/dom/base/test/bug704320.sjs b/dom/base/test/bug704320.sjs
index dff77f4b3..e0f549533 100644
--- a/dom/base/test/bug704320.sjs
+++ b/dom/base/test/bug704320.sjs
@@ -194,12 +194,6 @@ function createPolicyTest(policy, optionalEarlierPolicy) {
 }
 
 function handleRequest(request, response) {
-  if (request.method == 'HEAD') {
-    // respond to a HEAD request with a 418 so that we can easily distinguish
-    // HSTS priming responses and ignore them
-    response.setStatusLine('1.1', 418, "I'm a teapot");
-    return;
-  }
   var sharedKey = 'bug704320.sjs';
   var params = request.queryString.split('&');
   var action = params[0].split('=')[1];
diff --git a/dom/base/test/referrerHelper.js b/dom/base/test/referrerHelper.js
index 207bf5f15..01a22829c 100644
--- a/dom/base/test/referrerHelper.js
+++ b/dom/base/test/referrerHelper.js
@@ -25,9 +25,6 @@ function doXHR(url, onSuccess, onFail) {
   xhr.onload = function () {
     if (xhr.status == 200) {
       onSuccess(xhr);
-    } else if (xhr.status == 418) {
-      // Ignore HSTS priming responses
-      return;
     } else {
       onFail(xhr);
     }