diff --git a/parser/html/nsHtml5Parser.cpp b/parser/html/nsHtml5Parser.cpp
index af8bf753e001..922388ff803a 100644
--- a/parser/html/nsHtml5Parser.cpp
+++ b/parser/html/nsHtml5Parser.cpp
@@ -104,8 +104,7 @@ void nsHtml5Parser::SetDocumentCharset(NotNull<const Encoding*> aEncoding,
                                          (nsCharsetSource)aCharsetSource);
 }
 
-NS_IMETHODIMP
-nsHtml5Parser::GetChannel(nsIChannel** aChannel) {
+nsresult nsHtml5Parser::GetChannel(nsIChannel** aChannel) {
   if (GetStreamParser()) {
     return GetStreamParser()->GetChannel(aChannel);
   } else {
diff --git a/parser/html/nsHtml5Parser.h b/parser/html/nsHtml5Parser.h
index b79390bcea76..7a2a97841da8 100644
--- a/parser/html/nsHtml5Parser.h
+++ b/parser/html/nsHtml5Parser.h
@@ -75,7 +75,7 @@ class nsHtml5Parser final : public nsIParser, public nsSupportsWeakReference {
    * @param aChannel out param that will contain the result
    * @return NS_OK if successful or NS_NOT_AVAILABLE if not
    */
-  NS_IMETHOD GetChannel(nsIChannel** aChannel) override;
+  nsresult GetChannel(nsIChannel** aChannel);
 
   /**
    * Return |this| for backwards compat.
diff --git a/parser/htmlparser/nsIParser.h b/parser/htmlparser/nsIParser.h
index 687b55ba393a..0441c6020da2 100644
--- a/parser/htmlparser/nsIParser.h
+++ b/parser/htmlparser/nsIParser.h
@@ -109,14 +109,6 @@ class nsIParser : public nsParserBase {
                                   int32_t aSource,
                                   bool aForceAutoDetection = false) = 0;
 
-  /**
-   * Get the channel associated with this parser
-   * @update harishd,gagan 07/17/01
-   * @param aChannel out param that will contain the result
-   * @return NS_OK if successful
-   */
-  NS_IMETHOD GetChannel(nsIChannel** aChannel) override = 0;
-
   /**
    * Get the DTD associated with this parser
    * @update vidur 9/29/99
diff --git a/parser/htmlparser/nsParser.cpp b/parser/htmlparser/nsParser.cpp
index 22358e3a95ec..8b982ffed3ec 100644
--- a/parser/htmlparser/nsParser.cpp
+++ b/parser/htmlparser/nsParser.cpp
@@ -1419,21 +1419,6 @@ nsresult nsParser::Tokenize(bool aIsFinalChunk) {
   return result;
 }
 
-/**
- * Get the channel associated with this parser
- *
- * @param aChannel out param that will contain the result
- * @return NS_OK if successful
- */
-NS_IMETHODIMP
-nsParser::GetChannel(nsIChannel** aChannel) {
-  nsresult result = NS_ERROR_NOT_AVAILABLE;
-  if (mParserContext && mParserContext->mRequest) {
-    result = CallQueryInterface(mParserContext->mRequest, aChannel);
-  }
-  return result;
-}
-
 /**
  * Get the DTD associated with this parser
  */
diff --git a/parser/htmlparser/nsParser.h b/parser/htmlparser/nsParser.h
index 0fb1e1cd2c1f..246cfc03c6ed 100644
--- a/parser/htmlparser/nsParser.h
+++ b/parser/htmlparser/nsParser.h
@@ -212,14 +212,6 @@ class nsParser final : public nsIParser,
   CParserContext* PopContext();
   CParserContext* PeekContext() { return mParserContext; }
 
-  /**
-   * Get the channel associated with this parser
-   * @update harishd,gagan 07/17/01
-   * @param aChannel out param that will contain the result
-   * @return NS_OK if successful
-   */
-  NS_IMETHOD GetChannel(nsIChannel** aChannel) override;
-
   /**
    * Get the DTD associated with this parser
    * @update vidur 9/29/99
diff --git a/parser/htmlparser/nsParserBase.h b/parser/htmlparser/nsParserBase.h
index f1518abef688..13c8883d4c84 100644
--- a/parser/htmlparser/nsParserBase.h
+++ b/parser/htmlparser/nsParserBase.h
@@ -10,10 +10,6 @@
 class nsParserBase : public nsISupports {
  public:
   NS_IMETHOD_(bool) IsParserEnabled() { return true; }
-  NS_IMETHOD GetChannel(nsIChannel** aChannel) {
-    *aChannel = nullptr;
-    return NS_OK;
-  }
 };
 
 #endif  // nsParserBase_h_
diff --git a/parser/prototype/PrototypeDocumentParser.h b/parser/prototype/PrototypeDocumentParser.h
index 7d736d2bc56c..526a4b52086a 100644
--- a/parser/prototype/PrototypeDocumentParser.h
+++ b/parser/prototype/PrototypeDocumentParser.h
@@ -58,10 +58,6 @@ class PrototypeDocumentParser final : public nsIParser,
                                   int32_t aSource,
                                   bool aForceAutoDetection) override {}
 
-  NS_IMETHOD GetChannel(nsIChannel** aChannel) override {
-    return NS_ERROR_NOT_IMPLEMENTED;
-  }
-
   NS_IMETHOD GetDTD(nsIDTD** aDTD) override { return NS_ERROR_NOT_IMPLEMENTED; }
 
   virtual nsIStreamListener* GetStreamListener() override;