From 5f39ff87a0aa76ddc3af7c31a1d1b4be80472d87 Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Mar 30 2024 10:27:48 +0000
Subject: Issue #2490 - Part 2: Remove the now-unused GetExistingDOMRule() function.


---

diff --git a/layout/style/Rule.h b/layout/style/Rule.h
index ac72297..f3a529b 100644
--- a/layout/style/Rule.h
+++ b/layout/style/Rule.h
@@ -27,8 +27,7 @@ class GroupRule;
 
 #define DECL_STYLE_RULE_INHERIT                            \
   DECL_STYLE_RULE_INHERIT_NO_DOMRULE                       \
-  virtual nsIDOMCSSRule* GetDOMRule() override;        \
-  virtual nsIDOMCSSRule* GetExistingDOMRule() override;
+  virtual nsIDOMCSSRule* GetDOMRule() override;
 
 class Rule : public nsISupports {
 protected:
@@ -116,9 +115,6 @@ public:
   // supposed to have a DOM rule representation (and our code wouldn't work).
   virtual nsIDOMCSSRule* GetDOMRule() = 0;
 
-  // Like GetDOMRule(), but won't create one if we don't have one yet
-  virtual nsIDOMCSSRule* GetExistingDOMRule() = 0;
-
   // to implement methods on nsIDOMCSSRule
   nsresult GetParentRule(nsIDOMCSSRule** aParentRule);
   nsresult GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet);
diff --git a/layout/style/StyleRule.cpp b/layout/style/StyleRule.cpp
index a4b8541..9aae65e 100644
--- a/layout/style/StyleRule.cpp
+++ b/layout/style/StyleRule.cpp
@@ -1524,12 +1524,6 @@ StyleRule::GetDOMRule()
   return mDOMRule;
 }
 
-/* virtual */ nsIDOMCSSRule*
-StyleRule::GetExistingDOMRule()
-{
-  return mDOMRule;
-}
-
 void
 StyleRule::SetDeclaration(Declaration* aDecl)
 {
diff --git a/layout/style/StyleRule.h b/layout/style/StyleRule.h
index ef21acc..0287981 100644
--- a/layout/style/StyleRule.h
+++ b/layout/style/StyleRule.h
@@ -357,8 +357,6 @@ public:
 
   virtual nsIDOMCSSRule* GetDOMRule() override;
 
-  virtual nsIDOMCSSRule* GetExistingDOMRule() override;
-
 #ifdef DEBUG
   virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override;
 #endif
diff --git a/layout/style/nsCSSRules.cpp b/layout/style/nsCSSRules.cpp
index 53886fc..ba12d7b 100644
--- a/layout/style/nsCSSRules.cpp
+++ b/layout/style/nsCSSRules.cpp
@@ -44,8 +44,6 @@ using namespace mozilla::dom;
 
 #define IMPL_STYLE_RULE_INHERIT_GET_DOM_RULE_WEAK(class_, super_) \
   /* virtual */ nsIDOMCSSRule* class_::GetDOMRule()               \
-  { return this; }                                                \
-  /* virtual */ nsIDOMCSSRule* class_::GetExistingDOMRule()       \
   { return this; }
 
 #define IMPL_STYLE_RULE_INHERIT(class_, super_) \
@@ -905,7 +903,6 @@ NS_INTERFACE_MAP_BEGIN(DocumentRule)
   NS_INTERFACE_MAP_ENTRY(nsIDOMCSSGroupingRule)
   NS_INTERFACE_MAP_ENTRY(nsIDOMCSSConditionRule)
   NS_INTERFACE_MAP_ENTRY(nsIDOMCSSMozDocumentRule)
-  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, mozilla::css::Rule)
   NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(CSSMozDocumentRule)
 NS_INTERFACE_MAP_END_INHERITING(GroupRule)
 
diff --git a/layout/style/nsCSSRules.h b/layout/style/nsCSSRules.h
index 57c7079..d219945 100644
--- a/layout/style/nsCSSRules.h
+++ b/layout/style/nsCSSRules.h
@@ -70,10 +70,6 @@ public:
   {
     return this;
   }
-  virtual nsIDOMCSSRule* GetExistingDOMRule() override
-  {
-    return this;
-  }
 
   // nsIDOMCSSRule interface
   NS_DECL_NSIDOMCSSRULE
@@ -125,10 +121,6 @@ public:
   {
     return this;
   }
-  virtual nsIDOMCSSRule* GetExistingDOMRule() override
-  {
-    return this;
-  }
 
   // nsIDOMCSSRule interface
   NS_DECL_NSIDOMCSSRULE
@@ -459,10 +451,6 @@ public:
   {
     return this;
   }
-  virtual nsIDOMCSSRule* GetExistingDOMRule() override
-  {
-    return this;
-  }
 
   // nsIDOMCSSRule interface
   NS_DECL_NSIDOMCSSRULE
@@ -579,10 +567,6 @@ public:
   {
     return this;
   }
-  virtual nsIDOMCSSRule* GetExistingDOMRule() override
-  {
-    return this;
-  }
 
   NS_DECL_ISUPPORTS_INHERITED