diff --git a/dom/base/nsIObjectLoadingContent.idl b/dom/base/nsIObjectLoadingContent.idl
index 953a2591187c..172cb63a2d11 100644
--- a/dom/base/nsIObjectLoadingContent.idl
+++ b/dom/base/nsIObjectLoadingContent.idl
@@ -175,12 +175,6 @@ interface nsIObjectLoadingContent : nsISupports
    */
   readonly attribute unsigned long pluginFallbackType;
 
-  /**
-   * If this object currently owns a running plugin, regardless of whether or
-   * not one is pending spawn/despawn.
-   */
-  readonly attribute bool hasRunningPlugin;
-
   /**
    * If this plugin runs out-of-process, it has a runID to differentiate
    * between different times the plugin process has been instantiated.
diff --git a/dom/base/nsObjectLoadingContent.cpp b/dom/base/nsObjectLoadingContent.cpp
index 74a53328d079..e3eef626d741 100644
--- a/dom/base/nsObjectLoadingContent.cpp
+++ b/dom/base/nsObjectLoadingContent.cpp
@@ -3347,14 +3347,6 @@ nsObjectLoadingContent::DefaultFallbackType()
   return reason;
 }
 
-NS_IMETHODIMP
-nsObjectLoadingContent::GetHasRunningPlugin(bool *aHasPlugin)
-{
-  NS_ENSURE_TRUE(nsContentUtils::IsCallerChrome(), NS_ERROR_NOT_AVAILABLE);
-  *aHasPlugin = HasRunningPlugin();
-  return NS_OK;
-}
-
 NS_IMETHODIMP
 nsObjectLoadingContent::GetRunID(uint32_t* aRunID)
 {
diff --git a/dom/html/HTMLObjectElement.cpp b/dom/html/HTMLObjectElement.cpp
index 65f4078892b8..2c69070d1357 100644
--- a/dom/html/HTMLObjectElement.cpp
+++ b/dom/html/HTMLObjectElement.cpp
@@ -166,10 +166,6 @@ HTMLObjectElement::OnFocusBlurPlugin(Element* aElement, bool aFocus)
     nsCOMPtr<nsIObjectLoadingContent> olc = do_QueryInterface(aElement);
     bool hasRunningPlugin = false;
     if (olc) {
-      // nsIObjectLoadingContent::GetHasRunningPlugin() fails when
-      // nsContentUtils::IsCallerChrome() returns false (which it can do even
-      // when we're processing a trusted focus event).  We work around this by
-      // calling nsObjectLoadingContent::HasRunningPlugin() directly.
       hasRunningPlugin =
         static_cast<nsObjectLoadingContent*>(olc.get())->HasRunningPlugin();
     }